25126938660 has 48 divisors (see below), whose sum is σ = 70762136256. Its totient is φ = 6661782912.

The previous prime is 25126938659. The next prime is 25126938799. The reversal of 25126938660 is 6683962152.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1199974 + ... + 1220733.

It is an arithmetic number, because the mean of its divisors is an integer number (1474211172).

Almost surely, 2^25126938660 is an apocalyptic number.

25126938660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25126938660 is an abundant number, since it is smaller than the sum of its proper divisors (45635197596).

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

25126938660 is a wasteful number, since it uses less digits than its factorization.

25126938660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420892 (or 2420890 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 25126938660 in words is "twenty-five billion, one hundred twenty-six million, nine hundred thirty-eight thousand, six hundred sixty".