250252120666 has 16 divisors (see below), whose sum is σ = 383074209000. Its totient is φ = 122583725568.

The previous prime is 250252120631. The next prime is 250252120687. The reversal of 250252120666 is 666021252052.

It can be written as a sum of positive squares in 4 ways, for example, as 128576030625 + 121676090041 = 358575^2 + 348821^2 .

It is a super-2 number, since 2×250252120666² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5730111 + ... + 5773618.

Almost surely, 2^250252120666 is an apocalyptic number.

250252120666 is a deficient number, since it is larger than the sum of its proper divisors (132822088334).

250252120666 is a wasteful number, since it uses less digits than its factorization.

250252120666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11503953.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 250252120666 in words is "two hundred fifty billion, two hundred fifty-two million, one hundred twenty thousand, six hundred sixty-six".