25513435755 has 32 divisors (see below), whose sum is σ = 45364115520. Its totient is φ = 13605096960.

The previous prime is 25513435741. The next prime is 25513435789. The reversal of 25513435755 is 55753431552.

25513435755 is a `hidden beast` number, since 2 + 551 + 3 + 43 + 5 + 7 + 55 = 666.

It is not a de Polignac number, because 25513435755 - 2¹⁸ = 25513173611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 25513435755.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1366785 + ... + 1385325.

It is an arithmetic number, because the mean of its divisors is an integer number (1417628610).

Almost surely, 2^25513435755 is an apocalyptic number.

25513435755 is a deficient number, since it is larger than the sum of its proper divisors (19850679765).

25513435755 is a wasteful number, since it uses less digits than its factorization.

25513435755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28748 (or 28742 counting only the distinct ones).

The product of its digits is 1575000, while the sum is 45.

The spelling of 25513435755 in words is "twenty-five billion, five hundred thirteen million, four hundred thirty-five thousand, seven hundred fifty-five".