125251217 has 16 divisors (see below), whose sum is σ = 157745280. Its totient is φ = 96792192.

The previous prime is 125251177. The next prime is 125251219. The reversal of 125251217 is 712152521.

It is not a de Polignac number, because 125251217 - 2¹⁰ = 125250193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125251219) 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, 12092 + ... + 19917.

It is an arithmetic number, because the mean of its divisors is an integer number (9859080).

Almost surely, 2^125251217 is an apocalyptic number.

It is an amenable number.

125251217 is a deficient number, since it is larger than the sum of its proper divisors (32494063).

125251217 is a wasteful number, since it uses less digits than its factorization.

125251217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32072.

The product of its digits is 1400, while the sum is 26.

The square root of 125251217 is about 11191.5690142178. The cubic root of 125251217 is about 500.3347318592.

The spelling of 125251217 in words is "one hundred twenty-five million, two hundred fifty-one thousand, two hundred seventeen".