25312504887 has 8 divisors (see below), whose sum is σ = 37500007280. Its totient is φ = 16875003240.

The previous prime is 25312504873. The next prime is 25312504951. The reversal of 25312504887 is 78840521352.

25312504887 is a `hidden beast` number, since 2 + 53 + 12 + 504 + 8 + 87 = 666.

It is not a de Polignac number, because 25312504887 - 2⁴ = 25312504871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25312504837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468750064 + ... + 468750117.

It is an arithmetic number, because the mean of its divisors is an integer number (4687500910).

Almost surely, 2^25312504887 is an apocalyptic number.

25312504887 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

25312504887 is a deficient number, since it is larger than the sum of its proper divisors (12187502393).

25312504887 is an equidigital number, since it uses as much as digits as its factorization.

25312504887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937500190 (or 937500184 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 25312504887 in words is "twenty-five billion, three hundred twelve million, five hundred four thousand, eight hundred eighty-seven".