125893813 has 4 divisors (see below), whose sum is σ = 127957708. Its totient is φ = 123829920.

The previous prime is 125893771. The next prime is 125893837. The reversal of 125893813 is 318398521.

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 60575089 + 65318724 = 7783^2 + 8082^2 .

It is a cyclic number.

It is not a de Polignac number, because 125893813 - 2⁹ = 125893301 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 (125893853) 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, 1031856 + ... + 1031977.

It is an arithmetic number, because the mean of its divisors is an integer number (31989427).

Almost surely, 2^125893813 is an apocalyptic number.

It is an amenable number.

125893813 is a deficient number, since it is larger than the sum of its proper divisors (2063895).

125893813 is an equidigital number, since it uses as much as digits as its factorization.

125893813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063894.

The product of its digits is 51840, while the sum is 40.

The square root of 125893813 is about 11220.2412184409. The cubic root of 125893813 is about 501.1889213579.

The spelling of 125893813 in words is "one hundred twenty-five million, eight hundred ninety-three thousand, eight hundred thirteen".