251225126 has 8 divisors (see below), whose sum is σ = 377289360. Its totient is φ = 125462008.

The previous prime is 251225123. The next prime is 251225131. The reversal of 251225126 is 621522152.

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

It is a super-2 number, since 2×251225126² = 126228127867431752, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 251225095 and 251225104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251225123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73181 + ... + 76536.

It is an arithmetic number, because the mean of its divisors is an integer number (47161170).

Almost surely, 2^251225126 is an apocalyptic number.

251225126 is a deficient number, since it is larger than the sum of its proper divisors (126064234).

251225126 is a wasteful number, since it uses less digits than its factorization.

251225126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150558.

The product of its digits is 2400, while the sum is 26.

The square root of 251225126 is about 15850.0828389002. The cubic root of 251225126 is about 630.9878899259.

Adding to 251225126 its reverse (621522152), we get a palindrome (872747278).

The spelling of 251225126 in words is "two hundred fifty-one million, two hundred twenty-five thousand, one hundred twenty-six".