125634943 has 16 divisors (see below), whose sum is σ = 147908160. Its totient is φ = 104461056.

The previous prime is 125634911. The next prime is 125634953. The reversal of 125634943 is 349436521.

It is not a de Polignac number, because 125634943 - 2⁵ = 125634911 is a prime.

It is a super-2 number, since 2×125634943² = 31568277805226498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125634953) 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, 131355 + ... + 132307.

It is an arithmetic number, because the mean of its divisors is an integer number (9244260).

Almost surely, 2^125634943 is an apocalyptic number.

125634943 is a deficient number, since it is larger than the sum of its proper divisors (22273217).

125634943 is an equidigital number, since it uses as much as digits as its factorization.

125634943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506.

The product of its digits is 77760, while the sum is 37.

The square root of 125634943 is about 11208.6994339218. The cubic root of 125634943 is about 500.8451612666.

The spelling of 125634943 in words is "one hundred twenty-five million, six hundred thirty-four thousand, nine hundred forty-three".