1251249996 has 48 divisors (see below), whose sum is σ = 2941449056. Its totient is φ = 413973504.

The previous prime is 1251249973. The next prime is 1251250043. The reversal of 1251249996 is 6999421521.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1119630 + ... + 1120746.

Almost surely, 2^1251249996 is an apocalyptic number.

It is an amenable number.

1251249996 is an abundant number, since it is smaller than the sum of its proper divisors (1690199060).

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

1251249996 is a wasteful number, since it uses less digits than its factorization.

1251249996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738 (or 1736 counting only the distinct ones).

The product of its digits is 349920, while the sum is 48.

The square root of 1251249996 is about 35373.0122551077. The cubic root of 1251249996 is about 1077.5762966916.

The spelling of 1251249996 in words is "one billion, two hundred fifty-one million, two hundred forty-nine thousand, nine hundred ninety-six".