15025139012640 has 48 divisors (see below), whose sum is σ = 47329187891328. Its totient is φ = 4006703736576.

The previous prime is 15025139012627. The next prime is 15025139012677. The reversal of 15025139012640 is 4621093152051.

It is a happy number.

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

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, 15651185992 + ... + 15651186951.

It is an arithmetic number, because the mean of its divisors is an integer number (986024747736).

Almost surely, 2^{15025139012640} is an apocalyptic number.

15025139012640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15025139012640 is an abundant number, since it is smaller than the sum of its proper divisors (32304048878688).

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

15025139012640 is a wasteful number, since it uses less digits than its factorization.

15025139012640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31302372961 (or 31302372953 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 15025139012640 in words is "fifteen trillion, twenty-five billion, one hundred thirty-nine million, twelve thousand, six hundred forty".