251245144412 has 6 divisors (see below), whose sum is σ = 439679002728. Its totient is φ = 125622572204.

The previous prime is 251245144373. The next prime is 251245144529. The reversal of 251245144412 is 214441542152.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31405643048 + ... + 31405643055.

It is an arithmetic number, because the mean of its divisors is an integer number (73279833788).

Almost surely, 2^251245144412 is an apocalyptic number.

It is an amenable number.

251245144412 is a deficient number, since it is larger than the sum of its proper divisors (188433858316).

251245144412 is a wasteful number, since it uses less digits than its factorization.

251245144412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62811286107 (or 62811286105 counting only the distinct ones).

The product of its digits is 51200, while the sum is 35.

Adding to 251245144412 its reverse (214441542152), we get a palindrome (465686686564).

The spelling of 251245144412 in words is "two hundred fifty-one billion, two hundred forty-five million, one hundred forty-four thousand, four hundred twelve".