125011305553 has 16 divisors (see below), whose sum is σ = 135615939984. Its totient is φ = 114768855040.

The previous prime is 125011305541. The next prime is 125011305577. The reversal of 125011305553 is 355503110521.

It can be written as a sum of positive squares in 8 ways, for example, as 198894609 + 124812410944 = 14103^2 + 353288^2 .

It is not a de Polignac number, because 125011305553 - 2²⁵ = 124977751121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125011305583) 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, 5772201 + ... + 5793817.

It is an arithmetic number, because the mean of its divisors is an integer number (8475996249).

Almost surely, 2^125011305553 is an apocalyptic number.

It is an amenable number.

125011305553 is a deficient number, since it is larger than the sum of its proper divisors (10604634431).

125011305553 is a wasteful number, since it uses less digits than its factorization.

125011305553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29972.

The product of its (nonzero) digits is 11250, while the sum is 31.

The spelling of 125011305553 in words is "one hundred twenty-five billion, eleven million, three hundred five thousand, five hundred fifty-three".