25312759812 has 36 divisors (see below), whose sum is σ = 64551281340. Its totient is φ = 8362916352.

The previous prime is 25312759783. The next prime is 25312759817. The reversal of 25312759812 is 21895721352.

25312759812 is a `hidden beast` number, since 2 + 5 + 31 + 27 + 598 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6866773956 + 18445985856 = 82866^2 + 135816^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (25312759817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3107137 + ... + 3115272.

Almost surely, 2^25312759812 is an apocalyptic number.

It is an amenable number.

25312759812 is an abundant number, since it is smaller than the sum of its proper divisors (39238521528).

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

25312759812 is a wasteful number, since it uses less digits than its factorization.

25312759812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6222532 (or 6222527 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The spelling of 25312759812 in words is "twenty-five billion, three hundred twelve million, seven hundred fifty-nine thousand, eight hundred twelve".