25618877868 has 24 divisors (see below), whose sum is σ = 59798097072. Its totient is φ = 8536666624.

The previous prime is 25618877863. The next prime is 25618877873. The reversal of 25618877868 is 86877881652.

It is an interprime number because it is at equal distance from previous prime (25618877863) and next prime (25618877873).

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25618877799 and 25618877808.

It is not an unprimeable number, because it can be changed into a prime (25618877863) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 333705 + ... + 403232.

It is an arithmetic number, because the mean of its divisors is an integer number (2491587378).

Almost surely, 2^25618877868 is an apocalyptic number.

It is an amenable number.

25618877868 is an abundant number, since it is smaller than the sum of its proper divisors (34179219204).

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

25618877868 is a wasteful number, since it uses less digits than its factorization.

25618877868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739841 (or 739839 counting only the distinct ones).

The product of its digits is 72253440, while the sum is 66.

The spelling of 25618877868 in words is "twenty-five billion, six hundred eighteen million, eight hundred seventy-seven thousand, eight hundred sixty-eight".