125660215 has 4 divisors (see below), whose sum is σ = 150792264. Its totient is φ = 100528168.

The previous prime is 125660189. The next prime is 125660221. The reversal of 125660215 is 512066521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512066521 = 379 ⋅1351099.

It is a cyclic number.

It is not a de Polignac number, because 125660215 - 2²³ = 117271607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12566017 + ... + 12566026.

It is an arithmetic number, because the mean of its divisors is an integer number (37698066).

Almost surely, 2^125660215 is an apocalyptic number.

125660215 is a deficient number, since it is larger than the sum of its proper divisors (25132049).

125660215 is an equidigital number, since it uses as much as digits as its factorization.

125660215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25132048.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 125660215 is about 11209.8267158775. The cubic root of 125660215 is about 500.8787413891.

The spelling of 125660215 in words is "one hundred twenty-five million, six hundred sixty thousand, two hundred fifteen".