251240453252 has 12 divisors (see below), whose sum is σ = 439679879436. Its totient is φ = 125617630560.

The previous prime is 251240453239. The next prime is 251240453293. The reversal of 251240453252 is 252354042152.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 219795942976 + 31444510276 = 468824^2 + 177326^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422483 + ... + 825210.

It is an arithmetic number, because the mean of its divisors is an integer number (36639989953).

Almost surely, 2^251240453252 is an apocalyptic number.

It is an amenable number.

251240453252 is a deficient number, since it is larger than the sum of its proper divisors (188439426184).

251240453252 is a wasteful number, since it uses less digits than its factorization.

251240453252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298038 (or 1298036 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 251240453252 in words is "two hundred fifty-one billion, two hundred forty million, four hundred fifty-three thousand, two hundred fifty-two".