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13125333253 = 37335188561
BaseRepresentation
bin11000011100101010…
…01011000100000101
31020212201122000100211
430032111023010011
5203340041131003
610010225235421
7643154330464
oct141625130405
936781560324
1013125333253
1156259aa15a
122663792b71
1313123452a6
148c72729db
1551c45c96d
hex30e54b105

13125333253 has 4 divisors (see below), whose sum is σ = 13160522188. Its totient is φ = 13090144320.

The previous prime is 13125333233. The next prime is 13125333301. The reversal of 13125333253 is 35233352131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35233352131 = 122663287237.

It can be written as a sum of positive squares in 2 ways, for example, as 4457164644 + 8668168609 = 66762^2 + 93103^2 .

It is a cyclic number.

It is not a de Polignac number, because 13125333253 - 29 = 13125332741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125333233) 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, 17593908 + ... + 17594653.

It is an arithmetic number, because the mean of its divisors is an integer number (3290130547).

Almost surely, 213125333253 is an apocalyptic number.

It is an amenable number.

13125333253 is a deficient number, since it is larger than the sum of its proper divisors (35188935).

13125333253 is an equidigital number, since it uses as much as digits as its factorization.

13125333253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35188934.

The product of its digits is 24300, while the sum is 31.

Adding to 13125333253 its reverse (35233352131), we get a palindrome (48358685384).

The spelling of 13125333253 in words is "thirteen billion, one hundred twenty-five million, three hundred thirty-three thousand, two hundred fifty-three".

Divisors: 1 373 35188561 13125333253