125266557 has 16 divisors (see below), whose sum is σ = 190451520. Its totient is φ = 72552192.

The previous prime is 125266543. The next prime is 125266651. The reversal of 125266557 is 755662521.

It is a de Polignac number, because none of the positive numbers 2^k-125266557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125266157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93807 + ... + 95132.

It is an arithmetic number, because the mean of its divisors is an integer number (11903220).

Almost surely, 2^125266557 is an apocalyptic number.

125266557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

125266557 is a deficient number, since it is larger than the sum of its proper divisors (65184963).

125266557 is a wasteful number, since it uses less digits than its factorization.

125266557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188972.

The product of its digits is 126000, while the sum is 39.

The square root of 125266557 is about 11192.2543305627. The cubic root of 125266557 is about 500.3551570006.

The spelling of 125266557 in words is "one hundred twenty-five million, two hundred sixty-six thousand, five hundred fifty-seven".