25597825212 has 48 divisors (see below), whose sum is σ = 61849700640. Its totient is φ = 8230134528.

The previous prime is 25597825199. The next prime is 25597825217. The reversal of 25597825212 is 21252879552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25597825217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316218 + ... + 388830.

It is an arithmetic number, because the mean of its divisors is an integer number (1288535430).

Almost surely, 2^25597825212 is an apocalyptic number.

It is an amenable number.

25597825212 is an abundant number, since it is smaller than the sum of its proper divisors (36251875428).

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

25597825212 is a wasteful number, since it uses less digits than its factorization.

25597825212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73662 (or 73660 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 48.

The spelling of 25597825212 in words is "twenty-five billion, five hundred ninety-seven million, eight hundred twenty-five thousand, two hundred twelve".