252606022509 has 16 divisors (see below), whose sum is σ = 344698066944. Its totient is φ = 164460298800.

The previous prime is 252606022507. The next prime is 252606022567. The reversal of 252606022509 is 905220606252.

It is a happy number.

It is not a de Polignac number, because 252606022509 - 2¹ = 252606022507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252606022507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631204 + ... + 950594.

It is an arithmetic number, because the mean of its divisors is an integer number (21543629184).

Almost surely, 2^252606022509 is an apocalyptic number.

It is an amenable number.

252606022509 is a deficient number, since it is larger than the sum of its proper divisors (92092044435).

252606022509 is a wasteful number, since it uses less digits than its factorization.

252606022509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325568.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 252606022509 in words is "two hundred fifty-two billion, six hundred six million, twenty-two thousand, five hundred nine".