125395813 has 4 divisors (see below), whose sum is σ = 125421228. Its totient is φ = 125370400.

The previous prime is 125395811. The next prime is 125395841. The reversal of 125395813 is 318593521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76073284 + 49322529 = 8722^2 + 7023^2 .

It is a cyclic number.

It is not a de Polignac number, because 125395813 - 2¹ = 125395811 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 (125395811) 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, 2656 + ... + 16057.

It is an arithmetic number, because the mean of its divisors is an integer number (31355307).

Almost surely, 2^125395813 is an apocalyptic number.

It is an amenable number.

125395813 is a deficient number, since it is larger than the sum of its proper divisors (25415).

125395813 is an equidigital number, since it uses as much as digits as its factorization.

125395813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25414.

The product of its digits is 32400, while the sum is 37.

The square root of 125395813 is about 11198.0271923228. The cubic root of 125395813 is about 500.5271946030.

The spelling of 125395813 in words is "one hundred twenty-five million, three hundred ninety-five thousand, eight hundred thirteen".