1252815268 has 12 divisors (see below), whose sum is σ = 2239074432. Its totient is φ = 613079720.

The previous prime is 1252815257. The next prime is 1252815281. The reversal of 1252815268 is 8625182521.

It is a self number, because there is not a number n which added to its sum of digits gives 1252815268.

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, 3331768 + ... + 3332143.

It is an arithmetic number, because the mean of its divisors is an integer number (186589536).

Almost surely, 2^1252815268 is an apocalyptic number.

It is an amenable number.

1252815268 is a deficient number, since it is larger than the sum of its proper divisors (986259164).

1252815268 is a wasteful number, since it uses less digits than its factorization.

1252815268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6663962 (or 6663960 counting only the distinct ones).

The product of its digits is 76800, while the sum is 40.

The square root of 1252815268 is about 35395.1305690486. The cubic root of 1252815268 is about 1078.0254467852.

Adding to 1252815268 its reverse (8625182521), we get a palindrome (9877997789).

The spelling of 1252815268 in words is "one billion, two hundred fifty-two million, eight hundred fifteen thousand, two hundred sixty-eight".