125664215 has 16 divisors (see below), whose sum is σ = 152395776. Its totient is φ = 99472800.

The previous prime is 125664211. The next prime is 125664257. The reversal of 125664215 is 512466521.

It is not a de Polignac number, because 125664215 - 2² = 125664211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125664211) 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, 327914 + ... + 328296.

It is an arithmetic number, because the mean of its divisors is an integer number (9524736).

Almost surely, 2^125664215 is an apocalyptic number.

125664215 is a deficient number, since it is larger than the sum of its proper divisors (26731561).

125664215 is a wasteful number, since it uses less digits than its factorization.

125664215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910.

The product of its digits is 14400, while the sum is 32.

The square root of 125664215 is about 11210.0051293476. The cubic root of 125664215 is about 500.8840559688.

The spelling of 125664215 in words is "one hundred twenty-five million, six hundred sixty-four thousand, two hundred fifteen".