1252724135 has 32 divisors (see below), whose sum is σ = 1750678272. Its totient is φ = 852111360.

The previous prime is 1252724113. The next prime is 1252724147. The reversal of 1252724135 is 5314272521.

1252724135 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1252724135 - 2²⁴ = 1235946919 is a prime.

It is a super-2 number, since 2×1252724135² = 3138635516822996450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39875 + ... + 63995.

It is an arithmetic number, because the mean of its divisors is an integer number (54708696).

Almost surely, 2^1252724135 is an apocalyptic number.

1252724135 is a deficient number, since it is larger than the sum of its proper divisors (497954137).

1252724135 is a wasteful number, since it uses less digits than its factorization.

1252724135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24203.

The product of its digits is 16800, while the sum is 32.

The square root of 1252724135 is about 35393.8431792876. The cubic root of 1252724135 is about 1077.9993067049. Note that the first 3 decimals are identical.

Adding to 1252724135 its reverse (5314272521), we get a palindrome (6566996656).

The spelling of 1252724135 in words is "one billion, two hundred fifty-two million, seven hundred twenty-four thousand, one hundred thirty-five".