125636131039 has 16 divisors (see below), whose sum is σ = 129088612800. Its totient is φ = 122202743040.

The previous prime is 125636131021. The next prime is 125636131073. The reversal of 125636131039 is 930131636521.

It is a cyclic number.

It is not a de Polignac number, because 125636131039 - 2⁵ = 125636131007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125636130992 and 125636131010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125636131009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20264062 + ... + 20270260.

It is an arithmetic number, because the mean of its divisors is an integer number (8068038300).

Almost surely, 2^125636131039 is an apocalyptic number.

125636131039 is a deficient number, since it is larger than the sum of its proper divisors (3452481761).

125636131039 is an equidigital number, since it uses as much as digits as its factorization.

125636131039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7650.

The product of its (nonzero) digits is 87480, while the sum is 40.

The spelling of 125636131039 in words is "one hundred twenty-five billion, six hundred thirty-six million, one hundred thirty-one thousand, thirty-nine".