105525250545 has 128 divisors (see below), whose sum is σ = 209105971200. Its totient is φ = 44676403200.

The previous prime is 105525250541. The next prime is 105525250591. The reversal of 105525250545 is 545052525501.

It is not a de Polignac number, because 105525250545 - 2² = 105525250541 is a prime.

It is a super-2 number, since 2×105525250545² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (105525250541) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 35903686 + ... + 35906624.

It is an arithmetic number, because the mean of its divisors is an integer number (1633640400).

Almost surely, 2^105525250545 is an apocalyptic number.

105525250545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105525250545 is a deficient number, since it is larger than the sum of its proper divisors (103580720655).

105525250545 is a wasteful number, since it uses less digits than its factorization.

105525250545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871.

The product of its (nonzero) digits is 250000, while the sum is 39.

The spelling of 105525250545 in words is "one hundred five billion, five hundred twenty-five million, two hundred fifty thousand, five hundred forty-five".