125512515415 has 16 divisors (see below), whose sum is σ = 172207022400. Its totient is φ = 86027938560.

The previous prime is 125512515391. The next prime is 125512515419. The reversal of 125512515415 is 514515215521.

It is not a de Polignac number, because 125512515415 - 2¹⁷ = 125512384343 is a prime.

It is a super-2 number, since 2×125512515415² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125512515419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706240 + ... + 865909.

It is an arithmetic number, because the mean of its divisors is an integer number (10762938900).

Almost surely, 2^125512515415 is an apocalyptic number.

125512515415 is a deficient number, since it is larger than the sum of its proper divisors (46694506985).

125512515415 is a wasteful number, since it uses less digits than its factorization.

125512515415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574442.

The product of its digits is 50000, while the sum is 37.

The spelling of 125512515415 in words is "one hundred twenty-five billion, five hundred twelve million, five hundred fifteen thousand, four hundred fifteen".