125407894815 has 80 divisors (see below), whose sum is σ = 259569532992. Its totient is φ = 56738174976.

The previous prime is 125407894793. The next prime is 125407894837. The reversal of 125407894815 is 518498704521.

125407894815 is a `hidden beast` number, since 1 + 2 + 540 + 7 + 8 + 94 + 8 + 1 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (125407894793) and next prime (125407894837).

It is not a de Polignac number, because 125407894815 - 2⁶ = 125407894751 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 46977 + ... + 503013.

Almost surely, 2^125407894815 is an apocalyptic number.

125407894815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125407894815 is an abundant number, since it is smaller than the sum of its proper divisors (134161638177).

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

125407894815 is an equidigital number, since it uses as much as digits as its factorization.

125407894815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456158 (or 456149 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 125407894815 in words is "one hundred twenty-five billion, four hundred seven million, eight hundred ninety-four thousand, eight hundred fifteen".