125665953 has 32 divisors (see below), whose sum is σ = 196577280. Its totient is φ = 69928320.

The previous prime is 125665933. The next prime is 125665957. The reversal of 125665953 is 359566521.

It is not a de Polignac number, because 125665953 - 2¹⁶ = 125600417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125665957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132226 + ... + 133172.

It is an arithmetic number, because the mean of its divisors is an integer number (6143040).

Almost surely, 2^125665953 is an apocalyptic number.

It is an amenable number.

125665953 is a deficient number, since it is larger than the sum of its proper divisors (70911327).

125665953 is an equidigital number, since it uses as much as digits as its factorization.

125665953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117.

The product of its digits is 243000, while the sum is 42.

The square root of 125665953 is about 11210.0826491155. The cubic root of 125665953 is about 500.8863651186.

The spelling of 125665953 in words is "one hundred twenty-five million, six hundred sixty-five thousand, nine hundred fifty-three".