251225235 has 48 divisors (see below), whose sum is σ = 463690656. Its totient is φ = 125389824.

The previous prime is 251225197. The next prime is 251225243. The reversal of 251225235 is 532522152.

It is not a de Polignac number, because 251225235 - 2⁹ = 251224723 is a prime.

It is a super-2 number, since 2×251225235² = 126228237401610450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 251225199 and 251225208.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 149872 + ... + 151538.

It is an arithmetic number, because the mean of its divisors is an integer number (9660222).

Almost surely, 2^251225235 is an apocalyptic number.

251225235 is a deficient number, since it is larger than the sum of its proper divisors (212465421).

251225235 is a wasteful number, since it uses less digits than its factorization.

251225235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892 (or 1889 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 251225235 is about 15850.0862773677. The cubic root of 251225235 is about 630.9879811823.

Adding to 251225235 its reverse (532522152), we get a palindrome (783747387).

The spelling of 251225235 in words is "two hundred fifty-one million, two hundred twenty-five thousand, two hundred thirty-five".