1251425244 has 24 divisors (see below), whose sum is σ = 2920570128. Its totient is φ = 417059200.

The previous prime is 1251425237. The next prime is 1251425251. The reversal of 1251425244 is 4425241521.

It is an interprime number because it is at equal distance from previous prime (1251425237) and next prime (1251425251).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100144 + ... + 111944.

It is an arithmetic number, because the mean of its divisors is an integer number (121690422).

Almost surely, 2^1251425244 is an apocalyptic number.

It is an amenable number.

1251425244 is an abundant number, since it is smaller than the sum of its proper divisors (1669144884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251425244 is a wasteful number, since it uses less digits than its factorization.

1251425244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20645 (or 20643 counting only the distinct ones).

The product of its digits is 12800, while the sum is 30.

The square root of 1251425244 is about 35375.4893111035. The cubic root of 1251425244 is about 1077.6266021930.

Adding to 1251425244 its reverse (4425241521), we get a palindrome (5676666765).

The spelling of 1251425244 in words is "one billion, two hundred fifty-one million, four hundred twenty-five thousand, two hundred forty-four".