225121763 has 2 divisors, whose sum is σ = 225121764. Its totient is φ = 225121762.

The previous prime is 225121753. The next prime is 225121777. The reversal of 225121763 is 367121522.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225121763 - 2²⁴ = 208344547 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (225121753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112560881 + 112560882.

It is an arithmetic number, because the mean of its divisors is an integer number (112560882).

Almost surely, 2^225121763 is an apocalyptic number.

225121763 is a deficient number, since it is larger than the sum of its proper divisors (1).

225121763 is an equidigital number, since it uses as much as digits as its factorization.

225121763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 225121763 is about 15004.0582176956. The cubic root of 225121763 is about 608.3298963881.

The spelling of 225121763 in words is "two hundred twenty-five million, one hundred twenty-one thousand, seven hundred sixty-three".