225144641 has 2 divisors, whose sum is σ = 225144642. Its totient is φ = 225144640.

The previous prime is 225144637. The next prime is 225144671. The reversal of 225144641 is 146441522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202066225 + 23078416 = 14215^2 + 4804^2 .

It is a cyclic number.

It is not a de Polignac number, because 225144641 - 2² = 225144637 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225144671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112572320 + 112572321.

It is an arithmetic number, because the mean of its divisors is an integer number (112572321).

Almost surely, 2^225144641 is an apocalyptic number.

It is an amenable number.

225144641 is a deficient number, since it is larger than the sum of its proper divisors (1).

225144641 is an equidigital number, since it uses as much as digits as its factorization.

225144641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 29.

The square root of 225144641 is about 15004.8205920631. The cubic root of 225144641 is about 608.3505028660.

The spelling of 225144641 in words is "two hundred twenty-five million, one hundred forty-four thousand, six hundred forty-one".