1235641253 has 16 divisors (see below), whose sum is σ = 1545523200. Its totient is φ = 959722800.

The previous prime is 1235641241. The next prime is 1235641279. The reversal of 1235641253 is 3521465321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1235641253 - 2¹⁰ = 1235640229 is a prime.

It is a super-2 number, since 2×1235641253² = 3053618612230820018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235641853) 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, 1853 + ... + 49746.

It is an arithmetic number, because the mean of its divisors is an integer number (96595200).

Almost surely, 2^1235641253 is an apocalyptic number.

It is an amenable number.

1235641253 is a deficient number, since it is larger than the sum of its proper divisors (309881947).

1235641253 is a wasteful number, since it uses less digits than its factorization.

1235641253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51928.

The product of its digits is 21600, while the sum is 32.

The square root of 1235641253 is about 35151.6891912750. The cubic root of 1235641253 is about 1073.0767857610.

The spelling of 1235641253 in words is "one billion, two hundred thirty-five million, six hundred forty-one thousand, two hundred fifty-three".