1252447904 has 12 divisors (see below), whose sum is σ = 2465756874. Its totient is φ = 626223936.

The previous prime is 1252447877. The next prime is 1252447939. The reversal of 1252447904 is 4097442521.

It can be written as a sum of positive squares in only one way, i.e., 908419600 + 344028304 = 30140^2 + 18548^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19569467 + ... + 19569530.

Almost surely, 2^1252447904 is an apocalyptic number.

It is an amenable number.

1252447904 is a deficient number, since it is larger than the sum of its proper divisors (1213308970).

1252447904 is an equidigital number, since it uses as much as digits as its factorization.

1252447904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39139007 (or 39138999 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1252447904 is about 35389.9407176672. The cubic root of 1252447904 is about 1077.9200664029.

The spelling of 1252447904 in words is "one billion, two hundred fifty-two million, four hundred forty-seven thousand, nine hundred four".