253225121 has 4 divisors (see below), whose sum is σ = 256791744. Its totient is φ = 249658500.

The previous prime is 253225073. The next prime is 253225123. The reversal of 253225121 is 121522352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253225121 - 2¹⁴ = 253208737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253225123) 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, 1783205 + ... + 1783346.

It is an arithmetic number, because the mean of its divisors is an integer number (64197936).

Almost surely, 2^253225121 is an apocalyptic number.

It is an amenable number.

253225121 is a deficient number, since it is larger than the sum of its proper divisors (3566623).

253225121 is an equidigital number, since it uses as much as digits as its factorization.

253225121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3566622.

The product of its digits is 1200, while the sum is 23.

The square root of 253225121 is about 15913.0487650858. The cubic root of 253225121 is about 632.6578907694.

Adding to 253225121 its reverse (121522352), we get a palindrome (374747473).

The spelling of 253225121 in words is "two hundred fifty-three million, two hundred twenty-five thousand, one hundred twenty-one".