25126292640 has 96 divisors (see below), whose sum is σ = 79178734656. Its totient is φ = 6697728000.

The previous prime is 25126292603. The next prime is 25126292677. The reversal of 25126292640 is 4629262152.

It is an interprime number because it is at equal distance from previous prime (25126292603) and next prime (25126292677).

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1431759 + ... + 1449201.

It is an arithmetic number, because the mean of its divisors is an integer number (824778486).

Almost surely, 2^25126292640 is an apocalyptic number.

25126292640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25126292640 is an abundant number, since it is smaller than the sum of its proper divisors (54052442016).

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

25126292640 is a wasteful number, since it uses less digits than its factorization.

25126292640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20462 (or 20454 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 25126292640 in words is "twenty-five billion, one hundred twenty-six million, two hundred ninety-two thousand, six hundred forty".