252525502557 has 24 divisors (see below), whose sum is σ = 384469802080. Its totient is φ = 165590483760.

The previous prime is 252525502553. The next prime is 252525502591. The reversal of 252525502557 is 755205525252.

252525502557 is a `hidden beast` number, since 2 + 5 + 2 + 525 + 50 + 25 + 57 = 666.

It is not a de Polignac number, because 252525502557 - 2² = 252525502553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252525502553) 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, 8503207 + ... + 8532852.

Almost surely, 2^252525502557 is an apocalyptic number.

252525502557 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

252525502557 is a deficient number, since it is larger than the sum of its proper divisors (131944299523).

252525502557 is an equidigital number, since it uses as much as digits as its factorization.

252525502557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17036135 (or 17036123 counting only the distinct ones).

The product of its (nonzero) digits is 1750000, while the sum is 45.

The spelling of 252525502557 in words is "two hundred fifty-two billion, five hundred twenty-five million, five hundred two thousand, five hundred fifty-seven".