1252651306 has 4 divisors (see below), whose sum is σ = 1878976962. Its totient is φ = 626325652.

The previous prime is 1252651291. The next prime is 1252651313. The reversal of 1252651306 is 6031562521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 927750681 + 324900625 = 30459^2 + 18025^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313162825 + ... + 313162828.

Almost surely, 2^1252651306 is an apocalyptic number.

1252651306 is a deficient number, since it is larger than the sum of its proper divisors (626325656).

1252651306 is an equidigital number, since it uses as much as digits as its factorization.

1252651306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626325655.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1252651306 is about 35392.8143272049. The cubic root of 1252651306 is about 1077.9784159302.

The spelling of 1252651306 in words is "one billion, two hundred fifty-two million, six hundred fifty-one thousand, three hundred six".