78587440457625 has 64 divisors (see below), whose sum is σ = 158508486040320. Its totient is φ = 38103001416000.

The previous prime is 78587440457611. The next prime is 78587440457639. The reversal of 78587440457625 is 52675404478587.

78587440457625 is a `hidden beast` number, since 7 + 8 + 5 + 8 + 7 + 4 + 40 + 4 + 576 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (78587440457611) and next prime (78587440457639).

It is not a de Polignac number, because 78587440457625 - 2⁷ = 78587440457497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1058379582 + ... + 1058453831.

It is an arithmetic number, because the mean of its divisors is an integer number (2476695094380).

Almost surely, 2^{78587440457625} is an apocalyptic number.

78587440457625 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78587440457625 is an abundant number, since it is smaller than the sum of its proper divisors (79921045582695).

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

78587440457625 is a wasteful number, since it uses less digits than its factorization.

78587440457625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116833448 (or 2116833432 counting only the distinct ones).

The product of its (nonzero) digits is 2107392000, while the sum is 72.

The spelling of 78587440457625 in words is "seventy-eight trillion, five hundred eighty-seven billion, four hundred forty million, four hundred fifty-seven thousand, six hundred twenty-five".