225751553 has 2 divisors, whose sum is σ = 225751554. Its totient is φ = 225751552.

The previous prime is 225751549. The next prime is 225751571. The reversal of 225751553 is 355157522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221206129 + 4545424 = 14873^2 + 2132^2 .

It is a cyclic number.

It is not a de Polignac number, because 225751553 - 2² = 225751549 is a prime.

It is not a weakly prime, because it can be changed into another prime (225751583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112875776 + 112875777.

It is an arithmetic number, because the mean of its divisors is an integer number (112875777).

Almost surely, 2^225751553 is an apocalyptic number.

It is an amenable number.

225751553 is a deficient number, since it is larger than the sum of its proper divisors (1).

225751553 is an equidigital number, since it uses as much as digits as its factorization.

225751553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52500, while the sum is 35.

The square root of 225751553 is about 15025.0308818318. The cubic root of 225751553 is about 608.8966465301.

It can be divided in two parts, 22 and 5751553, that added together give a palindrome (5751575).

The spelling of 225751553 in words is "two hundred twenty-five million, seven hundred fifty-one thousand, five hundred fifty-three".