25685137559904 has 48 divisors (see below), whose sum is σ = 67712857338672. Its totient is φ = 8524966965248.

The previous prime is 25685137559863. The next prime is 25685137559933. The reversal of 25685137559904 is 40995573158652.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574126809 + ... + 574171544.

It is an arithmetic number, because the mean of its divisors is an integer number (1410684527889).

It is a 1-persistent number, because it is pandigital, but 2⋅25685137559904 = 51370275119808 is not.

Almost surely, 2^{25685137559904} is an apocalyptic number.

25685137559904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25685137559904 is an abundant number, since it is smaller than the sum of its proper divisors (42027719778768).

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

25685137559904 is a wasteful number, since it uses less digits than its factorization.

25685137559904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148298599 (or 1148298591 counting only the distinct ones).

The product of its (nonzero) digits is 408240000, while the sum is 69.

The spelling of 25685137559904 in words is "twenty-five trillion, six hundred eighty-five billion, one hundred thirty-seven million, five hundred fifty-nine thousand, nine hundred four".