125789993 has 4 divisors (see below), whose sum is σ = 143760000. Its totient is φ = 107819988.

The previous prime is 125789981. The next prime is 125790031. The reversal of 125789993 is 399987521.

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 a cyclic number.

It is not a de Polignac number, because 125789993 - 2²⁰ = 124741417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125789393) 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, 8984993 + ... + 8985006.

It is an arithmetic number, because the mean of its divisors is an integer number (35940000).

Almost surely, 2^125789993 is an apocalyptic number.

It is an amenable number.

125789993 is a deficient number, since it is larger than the sum of its proper divisors (17970007).

125789993 is an equidigital number, since it uses as much as digits as its factorization.

125789993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17970006.

The product of its digits is 1224720, while the sum is 53.

The square root of 125789993 is about 11215.6138039788. The cubic root of 125789993 is about 501.0511127755.

The spelling of 125789993 in words is "one hundred twenty-five million, seven hundred eighty-nine thousand, nine hundred ninety-three".