1235415253 has 4 divisors (see below), whose sum is σ = 1239312780. Its totient is φ = 1231517728.

The previous prime is 1235415197. The next prime is 1235415301. The reversal of 1235415253 is 3525145321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 312653124 + 922762129 = 17682^2 + 30377^2 .

It is a cyclic number.

It is not a de Polignac number, because 1235415253 - 2¹⁷ = 1235284181 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 (1235415053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1948288 + ... + 1948921.

It is an arithmetic number, because the mean of its divisors is an integer number (309828195).

Almost surely, 2^1235415253 is an apocalyptic number.

It is an amenable number.

1235415253 is a deficient number, since it is larger than the sum of its proper divisors (3897527).

1235415253 is an equidigital number, since it uses as much as digits as its factorization.

1235415253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897526.

The product of its digits is 18000, while the sum is 31.

The square root of 1235415253 is about 35148.4744050151. The cubic root of 1235415253 is about 1073.0113595056.

The spelling of 1235415253 in words is "one billion, two hundred thirty-five million, four hundred fifteen thousand, two hundred fifty-three".