225621253 has 12 divisors (see below), whose sum is σ = 266524128. Its totient is φ = 189330960.

The previous prime is 225621223. The next prime is 225621269. The reversal of 225621253 is 352126522.

225621253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-225621253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225621203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58825 + ... + 62542.

It is an arithmetic number, because the mean of its divisors is an integer number (22210344).

Almost surely, 2^225621253 is an apocalyptic number.

It is an amenable number.

225621253 is a deficient number, since it is larger than the sum of its proper divisors (40902875).

225621253 is a wasteful number, since it uses less digits than its factorization.

225621253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121404 (or 121391 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 225621253 is about 15020.6941583936. The cubic root of 225621253 is about 608.7794756826.

Adding to 225621253 its reverse (352126522), we get a palindrome (577747775).

The spelling of 225621253 in words is "two hundred twenty-five million, six hundred twenty-one thousand, two hundred fifty-three".