125143557 has 32 divisors (see below), whose sum is σ = 218987520. Its totient is φ = 61585920.

The previous prime is 125143541. The next prime is 125143561. The reversal of 125143557 is 755341521.

It is not a de Polignac number, because 125143557 - 2⁴ = 125143541 is a prime.

It is a super-2 number, since 2×125143557² = 31321819717224498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125143537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9868 + ... + 18645.

It is an arithmetic number, because the mean of its divisors is an integer number (6843360).

Almost surely, 2^125143557 is an apocalyptic number.

It is an amenable number.

125143557 is a deficient number, since it is larger than the sum of its proper divisors (93843963).

125143557 is a wasteful number, since it uses less digits than its factorization.

125143557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28553.

The product of its digits is 21000, while the sum is 33.

The square root of 125143557 is about 11186.7581094793. The cubic root of 125143557 is about 500.1913361050.

The spelling of 125143557 in words is "one hundred twenty-five million, one hundred forty-three thousand, five hundred fifty-seven".