25565725012 has 24 divisors (see below), whose sum is σ = 45703324800. Its totient is φ = 12507768000.

The previous prime is 25565724997. The next prime is 25565725013. The reversal of 25565725012 is 21052756552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25565725013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859387 + ... + 888637.

It is an arithmetic number, because the mean of its divisors is an integer number (1904305200).

Almost surely, 2^25565725012 is an apocalyptic number.

It is an amenable number.

25565725012 is a deficient number, since it is larger than the sum of its proper divisors (20137599788).

25565725012 is a wasteful number, since it uses less digits than its factorization.

25565725012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33951 (or 33949 counting only the distinct ones).

The product of its (nonzero) digits is 210000, while the sum is 40.

The spelling of 25565725012 in words is "twenty-five billion, five hundred sixty-five million, seven hundred twenty-five thousand, twelve".