25140545136 has 60 divisors (see below), whose sum is σ = 80409842032. Its totient is φ = 7183012608.

The previous prime is 25140545123. The next prime is 25140545147. The reversal of 25140545136 is 63154504152.

25140545136 is a `hidden beast` number, since 2 + 51 + 40 + 54 + 513 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 25140545136.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12469501 + ... + 12471516.

Almost surely, 2^25140545136 is an apocalyptic number.

It is an amenable number.

25140545136 is an abundant number, since it is smaller than the sum of its proper divisors (55269296896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25140545136 is a wasteful number, since it uses less digits than its factorization.

25140545136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24941038 (or 24941029 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 25140545136 in words is "twenty-five billion, one hundred forty million, five hundred forty-five thousand, one hundred thirty-six".