25423377864 has 64 divisors (see below), whose sum is σ = 63752304000. Its totient is φ = 8448662016.

The previous prime is 25423377857. The next prime is 25423377869. The reversal of 25423377864 is 46877332452.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (25423377869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18171837 + ... + 18173235.

It is an arithmetic number, because the mean of its divisors is an integer number (996129750).

Almost surely, 2^25423377864 is an apocalyptic number.

25423377864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25423377864 is an abundant number, since it is smaller than the sum of its proper divisors (38328926136).

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

25423377864 is a wasteful number, since it uses less digits than its factorization.

25423377864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174 (or 3170 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 51.

The spelling of 25423377864 in words is "twenty-five billion, four hundred twenty-three million, three hundred seventy-seven thousand, eight hundred sixty-four".