251325242 has 8 divisors (see below), whose sum is σ = 430843296. Its totient is φ = 107710812.

The previous prime is 251325227. The next prime is 251325247. The reversal of 251325242 is 242523152.

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

It is not an unprimeable number, because it can be changed into a prime (251325247) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8975888 + ... + 8975915.

It is an arithmetic number, because the mean of its divisors is an integer number (53855412).

Almost surely, 2^251325242 is an apocalyptic number.

251325242 is a deficient number, since it is larger than the sum of its proper divisors (179518054).

251325242 is a wasteful number, since it uses less digits than its factorization.

251325242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17951812.

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

The square root of 251325242 is about 15853.2407412491. The cubic root of 251325242 is about 631.0716973524.

Adding to 251325242 its reverse (242523152), we get a palindrome (493848394).

The spelling of 251325242 in words is "two hundred fifty-one million, three hundred twenty-five thousand, two hundred forty-two".