251332451204 has 6 divisors (see below), whose sum is σ = 439831789614. Its totient is φ = 125666225600.

The previous prime is 251332451197. The next prime is 251332451441. The reversal of 251332451204 is 402154233152.

It can be written as a sum of positive squares in only one way, i.e., 247852631104 + 3479820100 = 497848^2 + 58990^2 .

It is a super-2 number, since 2×251332451204² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31416556397 + ... + 31416556404.

It is an arithmetic number, because the mean of its divisors is an integer number (73305298269).

Almost surely, 2^251332451204 is an apocalyptic number.

It is an amenable number.

251332451204 is a deficient number, since it is larger than the sum of its proper divisors (188499338410).

251332451204 is a wasteful number, since it uses less digits than its factorization.

251332451204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62833112805 (or 62833112803 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 251332451204 its reverse (402154233152), we get a palindrome (653486684356).

The spelling of 251332451204 in words is "two hundred fifty-one billion, three hundred thirty-two million, four hundred fifty-one thousand, two hundred four".