125270817 has 16 divisors (see below), whose sum is σ = 191450112. Its totient is φ = 71372880.

The previous prime is 125270813. The next prime is 125270833. The reversal of 125270817 is 718072521.

It is not a de Polignac number, because 125270817 - 2² = 125270813 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125270813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1309 + ... + 15882.

It is an arithmetic number, because the mean of its divisors is an integer number (11965632).

Almost surely, 2^125270817 is an apocalyptic number.

It is an amenable number.

125270817 is a deficient number, since it is larger than the sum of its proper divisors (66179295).

125270817 is a wasteful number, since it uses less digits than its factorization.

125270817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17548.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 125270817 is about 11192.4446391305. Note that the first 3 decimals coincide. The cubic root of 125270817 is about 500.3608288757.

The spelling of 125270817 in words is "one hundred twenty-five million, two hundred seventy thousand, eight hundred seventeen".