251225234 has 8 divisors (see below), whose sum is σ = 405825420. Its totient is φ = 115950096.

The previous prime is 251225197. The next prime is 251225243. The reversal of 251225234 is 432522152.

It can be written as a sum of positive squares in 2 ways, for example, as 182385025 + 68840209 = 13505^2 + 8297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×251225234³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 9662509 = 251225234 / (2 + 5 + 1 + 2 + 2 + 5 + 2 + 3 + 4).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4831229 + ... + 4831280.

Almost surely, 2^251225234 is an apocalyptic number.

251225234 is a deficient number, since it is larger than the sum of its proper divisors (154600186).

251225234 is a wasteful number, since it uses less digits than its factorization.

251225234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9662524.

The product of its digits is 4800, while the sum is 26.

The square root of 251225234 is about 15850.0862458221. The cubic root of 251225234 is about 630.9879803451.

Adding to 251225234 its reverse (432522152), we get a palindrome (683747386).

The spelling of 251225234 in words is "two hundred fifty-one million, two hundred twenty-five thousand, two hundred thirty-four".