252560651066 has 4 divisors (see below), whose sum is σ = 378840976602. Its totient is φ = 126280325532.

The previous prime is 252560651051. The next prime is 252560651069. The reversal of 252560651066 is 660156065252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 243596538025 + 8964113041 = 493555^2 + 94679^2 .

It is not an unprimeable number, because it can be changed into a prime (252560651069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63140162765 + ... + 63140162768.

Almost surely, 2^252560651066 is an apocalyptic number.

252560651066 is a deficient number, since it is larger than the sum of its proper divisors (126280325536).

252560651066 is a wasteful number, since it uses less digits than its factorization.

252560651066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126280325535.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 252560651066 in words is "two hundred fifty-two billion, five hundred sixty million, six hundred fifty-one thousand, sixty-six".