251420560200 has 96 divisors (see below), whose sum is σ = 866004170400. Its totient is φ = 67045481280.

The previous prime is 251420560151. The next prime is 251420560201. The reversal of 251420560200 is 2065024152.

251420560200 is a `hidden beast` number, since 2 + 51 + 4 + 2 + 0 + 5 + 602 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (251420560201) 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, 23274282 + ... + 23285081.

It is an arithmetic number, because the mean of its divisors is an integer number (9020876775).

Almost surely, 2^251420560200 is an apocalyptic number.

251420560200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251420560200 is an abundant number, since it is smaller than the sum of its proper divisors (614583610200).

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

251420560200 is a wasteful number, since it uses less digits than its factorization.

251420560200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46559388 (or 46559373 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 251420560200 its reverse (2065024152), we get a palindrome (253485584352).

The spelling of 251420560200 in words is "two hundred fifty-one billion, four hundred twenty million, five hundred sixty thousand, two hundred".