125794909 has 4 divisors (see below), whose sum is σ = 128720416. Its totient is φ = 122869404.

The previous prime is 125794901. The next prime is 125794913. The reversal of 125794909 is 909497521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 125794909 - 2³ = 125794901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125794901) 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, 1462689 + ... + 1462774.

It is an arithmetic number, because the mean of its divisors is an integer number (32180104).

Almost surely, 2^125794909 is an apocalyptic number.

It is an amenable number.

125794909 is a deficient number, since it is larger than the sum of its proper divisors (2925507).

125794909 is an equidigital number, since it uses as much as digits as its factorization.

125794909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925506.

The product of its (nonzero) digits is 204120, while the sum is 46.

The square root of 125794909 is about 11215.8329605964. The cubic root of 125794909 is about 501.0576398850.

The spelling of 125794909 in words is "one hundred twenty-five million, seven hundred ninety-four thousand, nine hundred nine".