125763813 has 32 divisors (see below), whose sum is σ = 215654400. Its totient is φ = 70946928.

The previous prime is 125763809. The next prime is 125763857. The reversal of 125763813 is 318367521.

125763813 is a `hidden beast` number, since 1 + 2 + 5 + 7 + 638 + 13 = 666.

It is not a de Polignac number, because 125763813 - 2² = 125763809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125767813) 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, 10720 + ... + 19142.

It is an arithmetic number, because the mean of its divisors is an integer number (6739200).

Almost surely, 2^125763813 is an apocalyptic number.

It is an amenable number.

125763813 is a deficient number, since it is larger than the sum of its proper divisors (89890587).

125763813 is an equidigital number, since it uses as much as digits as its factorization.

125763813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8518 (or 8512 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 125763813 is about 11214.4466203197. The cubic root of 125763813 is about 501.0163499989.

The spelling of 125763813 in words is "one hundred twenty-five million, seven hundred sixty-three thousand, eight hundred thirteen".