251403304532012 has 12 divisors (see below), whose sum is σ = 439960287343920. Its totient is φ = 125700365290896.

The previous prime is 251403304532011. The next prime is 251403304532059. The reversal of 251403304532012 is 210235403304152.

It is not an unprimeable number, because it can be changed into a prime (251403304532011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321304187 + ... + 322085682.

It is an arithmetic number, because the mean of its divisors is an integer number (36663357278660).

Almost surely, 2^{251403304532012} is an apocalyptic number.

It is an amenable number.

251403304532012 is a deficient number, since it is larger than the sum of its proper divisors (188556982811908).

251403304532012 is a wasteful number, since it uses less digits than its factorization.

251403304532012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643487560 (or 643487558 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 251403304532012 its reverse (210235403304152), we get a palindrome (461638707836164).

The spelling of 251403304532012 in words is "two hundred fifty-one trillion, four hundred three billion, three hundred four million, five hundred thirty-two thousand, twelve".