225121423 has 2 divisors, whose sum is σ = 225121424. Its totient is φ = 225121422.

The previous prime is 225121409. The next prime is 225121433. The reversal of 225121423 is 324121522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225121423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225121394 and 225121403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225121433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112560711 + 112560712.

It is an arithmetic number, because the mean of its divisors is an integer number (112560712).

Almost surely, 2^225121423 is an apocalyptic number.

225121423 is a deficient number, since it is larger than the sum of its proper divisors (1).

225121423 is an equidigital number, since it uses as much as digits as its factorization.

225121423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 22.

The square root of 225121423 is about 15004.0468874234. The cubic root of 225121423 is about 608.3295901356.

Adding to 225121423 its reverse (324121522), we get a palindrome (549242945).

Subtracting 225121423 from its reverse (324121522), we obtain a palindrome (99000099).

The spelling of 225121423 in words is "two hundred twenty-five million, one hundred twenty-one thousand, four hundred twenty-three".