125359899844 has 81 divisors (see below), whose sum is σ = 236109140463. Its totient is φ = 58233285264.

The previous prime is 125359899829. The next prime is 125359899893. The reversal of 125359899844 is 448998953521.

The square root of 125359899844 is 354062.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×125359899844² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125359899844.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 700334547 + ... + 700334725.

Almost surely, 2^125359899844 is an apocalyptic number.

125359899844 is the 354062-nd square number.

It is an amenable number.

125359899844 is a deficient number, since it is larger than the sum of its proper divisors (110749240619).

125359899844 is an equidigital number, since it uses as much as digits as its factorization.

125359899844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 247 counting only the distinct ones).

The product of its digits is 111974400, while the sum is 67.

The spelling of 125359899844 in words is "one hundred twenty-five billion, three hundred fifty-nine million, eight hundred ninety-nine thousand, eight hundred forty-four".