125557257057 has 8 divisors (see below), whose sum is σ = 167464059840. Its totient is φ = 83677646160.

The previous prime is 125557257011. The next prime is 125557257079. The reversal of 125557257057 is 750752755521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125557257057 - 2³⁴ = 108377387873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125557257257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6787194 + ... + 6805667.

It is an arithmetic number, because the mean of its divisors is an integer number (20933007480).

Almost surely, 2^125557257057 is an apocalyptic number.

It is an amenable number.

125557257057 is a deficient number, since it is larger than the sum of its proper divisors (41906802783).

125557257057 is a wasteful number, since it uses less digits than its factorization.

125557257057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13595943.

The product of its (nonzero) digits is 4287500, while the sum is 51.

The spelling of 125557257057 in words is "one hundred twenty-five billion, five hundred fifty-seven million, two hundred fifty-seven thousand, fifty-seven".