657142125 has 64 divisors (see below), whose sum is σ = 1134701568. Its totient is φ = 337512000.

The previous prime is 657142093. The next prime is 657142127. The reversal of 657142125 is 521241756.

It is not a de Polignac number, because 657142125 - 2⁵ = 657142093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657142127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1338130 + ... + 1338620.

It is an arithmetic number, because the mean of its divisors is an integer number (17729712).

Almost surely, 2^657142125 is an apocalyptic number.

It is an amenable number.

657142125 is a deficient number, since it is larger than the sum of its proper divisors (477559443).

657142125 is a wasteful number, since it uses less digits than its factorization.

657142125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 625 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 657142125 is about 25634.7834982081. The cubic root of 657142125 is about 869.4002670771.

The spelling of 657142125 in words is "six hundred fifty-seven million, one hundred forty-two thousand, one hundred twenty-five".