225813611 has 2 divisors, whose sum is σ = 225813612. Its totient is φ = 225813610.

The previous prime is 225813607. The next prime is 225813629. The reversal of 225813611 is 116318522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225813611 - 2² = 225813607 is a prime.

It is not a weakly prime, because it can be changed into another prime (225813631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112906805 + 112906806.

It is an arithmetic number, because the mean of its divisors is an integer number (112906806).

Almost surely, 2^225813611 is an apocalyptic number.

225813611 is a deficient number, since it is larger than the sum of its proper divisors (1).

225813611 is an equidigital number, since it uses as much as digits as its factorization.

225813611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 29.

The square root of 225813611 is about 15027.0958937514. The cubic root of 225813611 is about 608.9524356570.

The spelling of 225813611 in words is "two hundred twenty-five million, eight hundred thirteen thousand, six hundred eleven".