25607116566 has 24 divisors (see below), whose sum is σ = 55525582944. Its totient is φ = 8529013680.

The previous prime is 25607116531. The next prime is 25607116567. The reversal of 25607116566 is 66561170652.

25607116566 is a `hidden beast` number, since 2 + 5 + 6 + 0 + 71 + 16 + 566 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25607116567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 534030 + ... + 580001.

It is an arithmetic number, because the mean of its divisors is an integer number (2313565956).

Almost surely, 2^25607116566 is an apocalyptic number.

25607116566 is an abundant number, since it is smaller than the sum of its proper divisors (29918466378).

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

25607116566 is a wasteful number, since it uses less digits than its factorization.

25607116566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115316 (or 1115313 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 25607116566 in words is "twenty-five billion, six hundred seven million, one hundred sixteen thousand, five hundred sixty-six".