525725557 has 6 divisors (see below), whose sum is σ = 611558358. Its totient is φ = 450621864.

The previous prime is 525725549. The next prime is 525725567. The reversal of 525725557 is 755527525.

It can be written as a sum of positive squares in only one way, i.e., 424401201 + 101324356 = 20601^2 + 10066^2 .

It is not a de Polignac number, because 525725557 - 2³ = 525725549 is a prime.

It is a super-2 number, since 2×525725557² = 552774722565920498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525725567) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5364498 + ... + 5364595.

It is an arithmetic number, because the mean of its divisors is an integer number (101926393).

Almost surely, 2^525725557 is an apocalyptic number.

It is an amenable number.

525725557 is a deficient number, since it is larger than the sum of its proper divisors (85832801).

525725557 is a wasteful number, since it uses less digits than its factorization.

525725557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10729107 (or 10729100 counting only the distinct ones).

The product of its digits is 612500, while the sum is 43.

The square root of 525725557 is about 22928.7059599970. The cubic root of 525725557 is about 807.0857819279.

The spelling of 525725557 in words is "five hundred twenty-five million, seven hundred twenty-five thousand, five hundred fifty-seven".