125373891 has 4 divisors (see below), whose sum is σ = 167165192. Its totient is φ = 83582592.

The previous prime is 125373887. The next prime is 125373893. The reversal of 125373891 is 198373521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 125373891 - 2² = 125373887 is a prime.

It is a super-2 number, since 2×125373891² = 31437225088959762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125373893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20895646 + ... + 20895651.

It is an arithmetic number, because the mean of its divisors is an integer number (41791298).

Almost surely, 2^125373891 is an apocalyptic number.

125373891 is a deficient number, since it is larger than the sum of its proper divisors (41791301).

125373891 is an equidigital number, since it uses as much as digits as its factorization.

125373891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41791300.

The product of its digits is 45360, while the sum is 39.

The square root of 125373891 is about 11197.0483164091. The cubic root of 125373891 is about 500.4980251106.

The spelling of 125373891 in words is "one hundred twenty-five million, three hundred seventy-three thousand, eight hundred ninety-one".