1253515413 has 16 divisors (see below), whose sum is σ = 1700454656. Its totient is φ = 821154240.

The previous prime is 1253515409. The next prime is 1253515421. The reversal of 1253515413 is 3145153521.

It is not a de Polignac number, because 1253515413 - 2² = 1253515409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253515423) 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, 219156 + ... + 224802.

It is an arithmetic number, because the mean of its divisors is an integer number (106278416).

Almost surely, 2^1253515413 is an apocalyptic number.

It is an amenable number.

1253515413 is a deficient number, since it is larger than the sum of its proper divisors (446939243).

1253515413 is a wasteful number, since it uses less digits than its factorization.

1253515413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6924.

The product of its digits is 9000, while the sum is 30.

The square root of 1253515413 is about 35405.0196017457. The cubic root of 1253515413 is about 1078.2262301956.

Adding to 1253515413 its reverse (3145153521), we get a palindrome (4398668934).

The spelling of 1253515413 in words is "one billion, two hundred fifty-three million, five hundred fifteen thousand, four hundred thirteen".