251200116 has 30 divisors (see below), whose sum is σ = 656687570. Its totient is φ = 83733264.

The previous prime is 251200087. The next prime is 251200133. The reversal of 251200116 is 611002152.

251200116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 154256400 + 96943716 = 12420^2 + 9846^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 387331 + ... + 387978.

Almost surely, 2^251200116 is an apocalyptic number.

It is an amenable number.

251200116 is an abundant number, since it is smaller than the sum of its proper divisors (405487454).

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

251200116 is a wasteful number, since it uses less digits than its factorization.

251200116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775325 (or 775314 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 251200116 is about 15849.2938643966. The cubic root of 251200116 is about 630.9669504986.

Adding to 251200116 its reverse (611002152), we get a palindrome (862202268).

The spelling of 251200116 in words is "two hundred fifty-one million, two hundred thousand, one hundred sixteen".