251264426600 has 96 divisors (see below), whose sum is σ = 643608404640. Its totient is φ = 90464160000.

The previous prime is 251264426593. The next prime is 251264426603. The reversal of 251264426600 is 6624462152.

It is not an unprimeable number, because it can be changed into a prime (251264426603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 343202 + ... + 787601.

It is an arithmetic number, because the mean of its divisors is an integer number (6704254215).

Almost surely, 2^251264426600 is an apocalyptic number.

251264426600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251264426600 is an abundant number, since it is smaller than the sum of its proper divisors (392343978040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251264426600 is a wasteful number, since it uses less digits than its factorization.

251264426600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130931 (or 1130922 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 251264426600 its reverse (6624462152), we get a palindrome (257888888752).

The spelling of 251264426600 in words is "two hundred fifty-one billion, two hundred sixty-four million, four hundred twenty-six thousand, six hundred".