251205201300 has 72 divisors (see below), whose sum is σ = 726871977216. Its totient is φ = 66983298560.

The previous prime is 251205201211. The next prime is 251205201301. The reversal of 251205201300 is 3102502152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251205201301) 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, 6864652 + ... + 6901148.

It is an arithmetic number, because the mean of its divisors is an integer number (10095444128).

Almost surely, 2^251205201300 is an apocalyptic number.

251205201300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251205201300 is an abundant number, since it is smaller than the sum of its proper divisors (475666775916).

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

251205201300 is a wasteful number, since it uses less digits than its factorization.

251205201300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59457 (or 59450 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 251205201300 its reverse (3102502152), we get a palindrome (254307703452).

The spelling of 251205201300 in words is "two hundred fifty-one billion, two hundred five million, two hundred one thousand, three hundred".