252606320523 has 32 divisors (see below), whose sum is σ = 397870548480. Its totient is φ = 158042982240.

The previous prime is 252606320503. The next prime is 252606320581. The reversal of 252606320523 is 325023606252.

252606320523 is a `hidden beast` number, since 2 + 5 + 2 + 606 + 3 + 20 + 5 + 23 = 666.

It is not a de Polignac number, because 252606320523 - 2¹⁰ = 252606319499 is a prime.

It is a super-2 number, since 2×252606320523² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252606320503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3804573 + ... + 3870398.

It is an arithmetic number, because the mean of its divisors is an integer number (12433454640).

Almost surely, 2^252606320523 is an apocalyptic number.

252606320523 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

252606320523 is a deficient number, since it is larger than the sum of its proper divisors (145264227957).

252606320523 is a wasteful number, since it uses less digits than its factorization.

252606320523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7675056 (or 7675050 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 252606320523 its reverse (325023606252), we get a palindrome (577629926775).

The spelling of 252606320523 in words is "two hundred fifty-two billion, six hundred six million, three hundred twenty thousand, five hundred twenty-three".