252625666 has 8 divisors (see below), whose sum is σ = 386088444. Its totient is φ = 123929520.

The previous prime is 252625663. The next prime is 252625687. The reversal of 252625666 is 666526252.

It can be written as a sum of positive squares in 2 ways, for example, as 252142641 + 483025 = 15879^2 + 695^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (252625663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191525 + ... + 1191736.

Almost surely, 2^252625666 is an apocalyptic number.

252625666 is a deficient number, since it is larger than the sum of its proper divisors (133462778).

252625666 is a wasteful number, since it uses less digits than its factorization.

252625666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383316.

The product of its digits is 259200, while the sum is 40.

The square root of 252625666 is about 15894.2022763019. The cubic root of 252625666 is about 632.1582699941.

The spelling of 252625666 in words is "two hundred fifty-two million, six hundred twenty-five thousand, six hundred sixty-six".