225213851 has 2 divisors, whose sum is σ = 225213852. Its totient is φ = 225213850.

The previous prime is 225213809. The next prime is 225213871. The reversal of 225213851 is 158312522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225213851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225213871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112606925 + 112606926.

It is an arithmetic number, because the mean of its divisors is an integer number (112606926).

Almost surely, 2^225213851 is an apocalyptic number.

225213851 is a deficient number, since it is larger than the sum of its proper divisors (1).

225213851 is an equidigital number, since it uses as much as digits as its factorization.

225213851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 29.

The square root of 225213851 is about 15007.1266736841. The cubic root of 225213851 is about 608.4128326119.

The spelling of 225213851 in words is "two hundred twenty-five million, two hundred thirteen thousand, eight hundred fifty-one".