557917925 has 12 divisors (see below), whose sum is σ = 692415876. Its totient is φ = 445948800.

The previous prime is 557917891. The next prime is 557917933. The reversal of 557917925 is 529719755.

It can be written as a sum of positive squares in 6 ways, for example, as 48874081 + 509043844 = 6991^2 + 22562^2 .

It is not a de Polignac number, because 557917925 - 2¹⁰ = 557916901 is a prime.

It is a super-2 number, since 2×557917925² = 622544822072611250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21905 + ... + 39945.

It is an arithmetic number, because the mean of its divisors is an integer number (57701323).

Almost surely, 2^557917925 is an apocalyptic number.

It is an amenable number.

557917925 is a deficient number, since it is larger than the sum of its proper divisors (134497951).

557917925 is a wasteful number, since it uses less digits than its factorization.

557917925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19288 (or 19283 counting only the distinct ones).

The product of its digits is 992250, while the sum is 50.

The square root of 557917925 is about 23620.2863022445. The cubic root of 557917925 is about 823.2342645345.

The spelling of 557917925 in words is "five hundred fifty-seven million, nine hundred seventeen thousand, nine hundred twenty-five".