251413255412 has 24 divisors (see below), whose sum is σ = 480746209440. Its totient is φ = 114094121760.

The previous prime is 251413255367. The next prime is 251413255417. The reversal of 251413255412 is 214552314152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251413255417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4588223 + ... + 4642694.

It is an arithmetic number, because the mean of its divisors is an integer number (20031092060).

Almost surely, 2^251413255412 is an apocalyptic number.

251413255412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

251413255412 is a deficient number, since it is larger than the sum of its proper divisors (229332954028).

251413255412 is a wasteful number, since it uses less digits than its factorization.

251413255412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9231551 (or 9231549 counting only the distinct ones).

The product of its digits is 48000, while the sum is 35.

Adding to 251413255412 its reverse (214552314152), we get a palindrome (465965569564).

The spelling of 251413255412 in words is "two hundred fifty-one billion, four hundred thirteen million, two hundred fifty-five thousand, four hundred twelve".