25135000251 has 16 divisors (see below), whose sum is σ = 33746797824. Its totient is φ = 16640061984.

The previous prime is 25135000243. The next prime is 25135000301. The reversal of 25135000251 is 15200053152.

It is a happy number.

It is not a de Polignac number, because 25135000251 - 2³ = 25135000243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25135002251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 826746 + ... + 856608.

It is an arithmetic number, because the mean of its divisors is an integer number (2109174864).

Almost surely, 2^25135000251 is an apocalyptic number.

25135000251 is a deficient number, since it is larger than the sum of its proper divisors (8611797573).

25135000251 is a wasteful number, since it uses less digits than its factorization.

25135000251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31810.

The product of its (nonzero) digits is 1500, while the sum is 24.

The spelling of 25135000251 in words is "twenty-five billion, one hundred thirty-five million, two hundred fifty-one", and thus it is an aban number.