25677051057 has 32 divisors (see below), whose sum is σ = 43486709760. Its totient is φ = 14668436880.

The previous prime is 25677051053. The next prime is 25677051109. The reversal of 25677051057 is 75015077652.

It is a happy number.

25677051057 is a `hidden beast` number, since 2 + 5 + 67 + 70 + 510 + 5 + 7 = 666.

It is not a de Polignac number, because 25677051057 - 2² = 25677051053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25677051053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 724132 + ... + 758762.

It is an arithmetic number, because the mean of its divisors is an integer number (1358959680).

Almost surely, 2^25677051057 is an apocalyptic number.

25677051057 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

25677051057 is a deficient number, since it is larger than the sum of its proper divisors (17809658703).

25677051057 is a wasteful number, since it uses less digits than its factorization.

25677051057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38570 (or 38564 counting only the distinct ones).

The product of its (nonzero) digits is 514500, while the sum is 45.

The spelling of 25677051057 in words is "twenty-five billion, six hundred seventy-seven million, fifty-one thousand, fifty-seven".