25137515265 has 16 divisors (see below), whose sum is σ = 40820324928. Its totient is φ = 13206574656.

The previous prime is 25137515251. The next prime is 25137515267. The reversal of 25137515265 is 56251573152.

It is not a de Polignac number, because 25137515265 - 2⁵ = 25137515233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25137515267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12505222 + ... + 12507231.

It is an arithmetic number, because the mean of its divisors is an integer number (2551270308).

Almost surely, 2^25137515265 is an apocalyptic number.

It is an amenable number.

25137515265 is a deficient number, since it is larger than the sum of its proper divisors (15682809663).

25137515265 is a wasteful number, since it uses less digits than its factorization.

25137515265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25012528.

The product of its digits is 315000, while the sum is 42.

The spelling of 25137515265 in words is "twenty-five billion, one hundred thirty-seven million, five hundred fifteen thousand, two hundred sixty-five".