251254225116 has 18 divisors (see below), whose sum is σ = 635114846912. Its totient is φ = 83751408360.

The previous prime is 251254225097. The next prime is 251254225147. The reversal of 251254225116 is 611522452152.

251254225116 is a `hidden beast` number, since 2 + 51 + 2 + 542 + 2 + 51 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6979284031 = 251254225116 / (2 + 5 + 1 + 2 + 5 + 4 + 2 + 2 + 5 + 1 + 1 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3489641980 + ... + 3489642051.

Almost surely, 2^251254225116 is an apocalyptic number.

It is an amenable number.

251254225116 is an abundant number, since it is smaller than the sum of its proper divisors (383860621796).

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

251254225116 is a wasteful number, since it uses less digits than its factorization.

251254225116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6979284041 (or 6979284036 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

Adding to 251254225116 its reverse (611522452152), we get a palindrome (862776677268).

The spelling of 251254225116 in words is "two hundred fifty-one billion, two hundred fifty-four million, two hundred twenty-five thousand, one hundred sixteen".