1215254253 has 16 divisors (see below), whose sum is σ = 1637280576. Its totient is φ = 801736320.

The previous prime is 1215254239. The next prime is 1215254317. The reversal of 1215254253 is 3524525121.

It is not a de Polignac number, because 1215254253 - 2⁸ = 1215253997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1215254253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215254203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131575 + ... + 140507.

It is an arithmetic number, because the mean of its divisors is an integer number (102330036).

Almost surely, 2^1215254253 is an apocalyptic number.

It is an amenable number.

1215254253 is a deficient number, since it is larger than the sum of its proper divisors (422026323).

1215254253 is a wasteful number, since it uses less digits than its factorization.

1215254253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9404.

The product of its digits is 12000, while the sum is 30.

The square root of 1215254253 is about 34860.4970274378. The cubic root of 1215254253 is about 1067.1424183197.

Adding to 1215254253 its reverse (3524525121), we get a palindrome (4739779374).

The spelling of 1215254253 in words is "one billion, two hundred fifteen million, two hundred fifty-four thousand, two hundred fifty-three".