8575525557 has 24 divisors (see below), whose sum is σ = 12961708344. Its totient is φ = 5457538944.

The previous prime is 8575525529. The next prime is 8575525589. The reversal of 8575525557 is 7555255758.

8575525557 is a `hidden beast` number, since 85 + 7 + 5 + 5 + 2 + 5 + 557 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5732609796 + 2842915761 = 75714^2 + 53319^2 .

It is not a de Polignac number, because 8575525557 - 2⁷ = 8575525429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8575525457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225298 + ... + 260595.

It is an arithmetic number, because the mean of its divisors is an integer number (540071181).

Almost surely, 2^8575525557 is an apocalyptic number.

It is an amenable number.

8575525557 is a deficient number, since it is larger than the sum of its proper divisors (4386182787).

8575525557 is a wasteful number, since it uses less digits than its factorization.

8575525557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485989 (or 485986 counting only the distinct ones).

The product of its digits is 12250000, while the sum is 54.

The square root of 8575525557 is about 92604.1335848460. The cubic root of 8575525557 is about 2046.8542318945.

The spelling of 8575525557 in words is "eight billion, five hundred seventy-five million, five hundred twenty-five thousand, five hundred fifty-seven".