25850668825 has 12 divisors (see below), whose sum is σ = 32921177260. Its totient is φ = 20121600960.

The previous prime is 25850668819. The next prime is 25850668841. The reversal of 25850668825 is 52886605852.

It can be written as a sum of positive squares in 6 ways, for example, as 198161929 + 25652506896 = 14077^2 + 160164^2 .

It is not a de Polignac number, because 25850668825 - 2¹⁷ = 25850537753 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13972410 + ... + 13974259.

Almost surely, 2^25850668825 is an apocalyptic number.

25850668825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25850668825 is a deficient number, since it is larger than the sum of its proper divisors (7070508435).

25850668825 is a wasteful number, since it uses less digits than its factorization.

25850668825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27946716 (or 27946711 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 55.

The spelling of 25850668825 in words is "twenty-five billion, eight hundred fifty million, six hundred sixty-eight thousand, eight hundred twenty-five".