25707997716 has 48 divisors (see below), whose sum is σ = 61637452800. Its totient is φ = 8334984672.

The previous prime is 25707997699. The next prime is 25707997751. The reversal of 25707997716 is 61779970752.

It is a super-2 number, since 2×25707997716² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25707997716.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19095 + ... + 227553.

It is an arithmetic number, because the mean of its divisors is an integer number (1284113600).

Almost surely, 2^25707997716 is an apocalyptic number.

It is an amenable number.

25707997716 is an abundant number, since it is smaller than the sum of its proper divisors (35929455084).

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

25707997716 is a wasteful number, since it uses less digits than its factorization.

25707997716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208748 (or 208746 counting only the distinct ones).

The product of its (nonzero) digits is 11668860, while the sum is 60.

The spelling of 25707997716 in words is "twenty-five billion, seven hundred seven million, nine hundred ninety-seven thousand, seven hundred sixteen".