1252405712 has 10 divisors (see below), whose sum is σ = 2426536098. Its totient is φ = 626202848.

The previous prime is 1252405709. The next prime is 1252405751. The reversal of 1252405712 is 2175042521.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 788261776 + 464143936 = 28076^2 + 21544^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39137663 + ... + 39137694.

Almost surely, 2^1252405712 is an apocalyptic number.

It is an amenable number.

1252405712 is a deficient number, since it is larger than the sum of its proper divisors (1174130386).

1252405712 is an equidigital number, since it uses as much as digits as its factorization.

1252405712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78275365 (or 78275359 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 1252405712 is about 35389.3446110549. The cubic root of 1252405712 is about 1077.9079620766.

The spelling of 1252405712 in words is "one billion, two hundred fifty-two million, four hundred five thousand, seven hundred twelve".