1252564366 has 8 divisors (see below), whose sum is σ = 1880184240. Its totient is φ = 625836288.

The previous prime is 1252564343. The next prime is 1252564381. The reversal of 1252564366 is 6634652521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219426 + ... + 225061.

It is an arithmetic number, because the mean of its divisors is an integer number (235023030).

Almost surely, 2^1252564366 is an apocalyptic number.

1252564366 is a deficient number, since it is larger than the sum of its proper divisors (627619874).

1252564366 is a wasteful number, since it uses less digits than its factorization.

1252564366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445898.

The product of its digits is 259200, while the sum is 40.

The square root of 1252564366 is about 35391.5860904820. The cubic root of 1252564366 is about 1077.9534763982.

The spelling of 1252564366 in words is "one billion, two hundred fifty-two million, five hundred sixty-four thousand, three hundred sixty-six".