251450234225 has 12 divisors (see below), whose sum is σ = 312098417280. Its totient is φ = 200966557200.

The previous prime is 251450234209. The next prime is 251450234351. The reversal of 251450234225 is 522432054152.

It is a happy number.

251450234225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 251450234225 - 2⁴ = 251450234209 is a prime.

It is a super-2 number, since 2×251450234225² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4814261 + ... + 4866210.

It is an arithmetic number, because the mean of its divisors is an integer number (26008201440).

Almost surely, 2^251450234225 is an apocalyptic number.

251450234225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

251450234225 is a deficient number, since it is larger than the sum of its proper divisors (60648183055).

251450234225 is a wasteful number, since it uses less digits than its factorization.

251450234225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9681520 (or 9681515 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 251450234225 its reverse (522432054152), we get a palindrome (773882288377).

The spelling of 251450234225 in words is "two hundred fifty-one billion, four hundred fifty million, two hundred thirty-four thousand, two hundred twenty-five".