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105225131453 = 138094240881
BaseRepresentation
bin110000111111111101…
…0000001010110111101
3101001121022122112002212
41201333322001112331
53211000113201303
6120201215430205
710413401600621
oct1417772012675
9331538575085
10105225131453
1140697930762
1218487825365
139bcc1b45c0
145142da7181
152b0cd11ad8
hex187fe815bd

105225131453 has 4 divisors (see below), whose sum is σ = 113319372348. Its totient is φ = 97130890560.

The previous prime is 105225131441. The next prime is 105225131507. The reversal of 105225131453 is 354131522501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354131522501 = 1572255614793.

It can be written as a sum of positive squares in 2 ways, for example, as 48981214489 + 56243916964 = 221317^2 + 237158^2 .

It is a cyclic number.

It is not a de Polignac number, because 105225131453 - 220 = 105224082877 is a prime.

It is a super-2 number, since 2×1052251314532 (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105225131153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4047120428 + ... + 4047120453.

It is an arithmetic number, because the mean of its divisors is an integer number (28329843087).

Almost surely, 2105225131453 is an apocalyptic number.

105225131453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

105225131453 is a deficient number, since it is larger than the sum of its proper divisors (8094240895).

105225131453 is an equidigital number, since it uses as much as digits as its factorization.

105225131453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8094240894.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 105225131453 its reverse (354131522501), we get a palindrome (459356653954).

The spelling of 105225131453 in words is "one hundred five billion, two hundred twenty-five million, one hundred thirty-one thousand, four hundred fifty-three".

Divisors: 1 13 8094240881 105225131453