125173557 has 12 divisors (see below), whose sum is σ = 180966240. Its totient is φ = 83375208.

The previous prime is 125173537. The next prime is 125173583. The reversal of 125173557 is 755371521.

It is a happy number.

It is not a de Polignac number, because 125173557 - 2¹⁰ = 125172533 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125173507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5808 + ... + 16854.

It is an arithmetic number, because the mean of its divisors is an integer number (15080520).

Almost surely, 2^125173557 is an apocalyptic number.

It is an amenable number.

125173557 is a deficient number, since it is larger than the sum of its proper divisors (55792683).

125173557 is a wasteful number, since it uses less digits than its factorization.

125173557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12312 (or 12309 counting only the distinct ones).

The product of its digits is 36750, while the sum is 36.

The square root of 125173557 is about 11188.0989001707. The cubic root of 125173557 is about 500.2313023153.

The spelling of 125173557 in words is "one hundred twenty-five million, one hundred seventy-three thousand, five hundred fifty-seven".