25137540375 has 32 divisors (see below), whose sum is σ = 41846009088. Its totient is φ = 13401194400.

The previous prime is 25137540361. The next prime is 25137540383. The reversal of 25137540375 is 57304573152.

It is not a de Polignac number, because 25137540375 - 2⁷ = 25137540247 is a prime.

It is a super-2 number, since 2×25137540375² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1002744 + ... + 1027506.

It is an arithmetic number, because the mean of its divisors is an integer number (1307687784).

Almost surely, 2^25137540375 is an apocalyptic number.

25137540375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25137540375 is a deficient number, since it is larger than the sum of its proper divisors (16708468713).

25137540375 is a wasteful number, since it uses less digits than its factorization.

25137540375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27488 (or 27478 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 42.

The spelling of 25137540375 in words is "twenty-five billion, one hundred thirty-seven million, five hundred forty thousand, three hundred seventy-five".