25437985368 has 16 divisors (see below), whose sum is σ = 63594963480. Its totient is φ = 8479328448.

The previous prime is 25437985351. The next prime is 25437985373. The reversal of 25437985368 is 86358973452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529958005 + ... + 529958052.

Almost surely, 2^25437985368 is an apocalyptic number.

It is an amenable number.

25437985368 is an abundant number, since it is smaller than the sum of its proper divisors (38156978112).

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

25437985368 is a wasteful number, since it uses less digits than its factorization.

25437985368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059916066 (or 1059916062 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 60.

The spelling of 25437985368 in words is "twenty-five billion, four hundred thirty-seven million, nine hundred eighty-five thousand, three hundred sixty-eight".