251255314402 has 8 divisors (see below), whose sum is σ = 389040486912. Its totient is φ = 121575152100.

The previous prime is 251255314399. The next prime is 251255314451. The reversal of 251255314402 is 204413552152.

It is a happy number.

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

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, 2026252474 + ... + 2026252597.

It is an arithmetic number, because the mean of its divisors is an integer number (48630060864).

Almost surely, 2^251255314402 is an apocalyptic number.

251255314402 is a deficient number, since it is larger than the sum of its proper divisors (137785172510).

251255314402 is a wasteful number, since it uses less digits than its factorization.

251255314402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052505104.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 251255314402 its reverse (204413552152), we get a palindrome (455668866554).

The spelling of 251255314402 in words is "two hundred fifty-one billion, two hundred fifty-five million, three hundred fourteen thousand, four hundred two".