125181217 has 12 divisors (see below), whose sum is σ = 151977280. Its totient is φ = 100984896.

The previous prime is 125181187. The next prime is 125181223. The reversal of 125181217 is 712181521.

It is not a de Polignac number, because 125181217 - 2¹¹ = 125179169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125181227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28917 + ... + 32962.

Almost surely, 2^125181217 is an apocalyptic number.

125181217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

125181217 is a deficient number, since it is larger than the sum of its proper divisors (26796063).

125181217 is an equidigital number, since it uses as much as digits as its factorization.

125181217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61920 (or 61903 counting only the distinct ones).

The product of its digits is 1120, while the sum is 28.

The square root of 125181217 is about 11188.4412229765. The cubic root of 125181217 is about 500.2415059976.

The spelling of 125181217 in words is "one hundred twenty-five million, one hundred eighty-one thousand, two hundred seventeen".