125912516 has 6 divisors (see below), whose sum is σ = 220346910. Its totient is φ = 62956256.

The previous prime is 125912513. The next prime is 125912537. The reversal of 125912516 is 615219521.

It can be written as a sum of positive squares in only one way, i.e., 69722500 + 56190016 = 8350^2 + 7496^2 .

It is not an unprimeable number, because it can be changed into a prime (125912513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15739061 + ... + 15739068.

It is an arithmetic number, because the mean of its divisors is an integer number (36724485).

Almost surely, 2^125912516 is an apocalyptic number.

It is an amenable number.

125912516 is a deficient number, since it is larger than the sum of its proper divisors (94434394).

125912516 is a wasteful number, since it uses less digits than its factorization.

125912516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31478133 (or 31478131 counting only the distinct ones).

The product of its digits is 5400, while the sum is 32.

The square root of 125912516 is about 11221.0746365934. The cubic root of 125912516 is about 501.2137392898.

The spelling of 125912516 in words is "one hundred twenty-five million, nine hundred twelve thousand, five hundred sixteen".