125057913309 has 16 divisors (see below), whose sum is σ = 211738266240. Its totient is φ = 71461664640.

The previous prime is 125057913307. The next prime is 125057913329. The reversal of 125057913309 is 903319750521.

125057913309 is a `hidden beast` number, since 1 + 2 + 505 + 7 + 9 + 133 + 0 + 9 = 666.

It is not a de Polignac number, because 125057913309 - 2¹ = 125057913307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125057913307) 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, 330840852 + ... + 330841229.

It is an arithmetic number, because the mean of its divisors is an integer number (13233641640).

Almost surely, 2^125057913309 is an apocalyptic number.

It is an amenable number.

125057913309 is a deficient number, since it is larger than the sum of its proper divisors (86680352931).

125057913309 is an equidigital number, since it uses as much as digits as its factorization.

125057913309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661682097 (or 661682091 counting only the distinct ones).

The product of its (nonzero) digits is 255150, while the sum is 45.

The spelling of 125057913309 in words is "one hundred twenty-five billion, fifty-seven million, nine hundred thirteen thousand, three hundred nine".