225720079639 has 2 divisors, whose sum is σ = 225720079640. Its totient is φ = 225720079638.

The previous prime is 225720079619. The next prime is 225720079649. The reversal of 225720079639 is 936970027522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225720079639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225720079619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112860039819 + 112860039820.

It is an arithmetic number, because the mean of its divisors is an integer number (112860039820).

Almost surely, 2^225720079639 is an apocalyptic number.

225720079639 is a deficient number, since it is larger than the sum of its proper divisors (1).

225720079639 is an equidigital number, since it uses as much as digits as its factorization.

225720079639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 52.

The spelling of 225720079639 in words is "two hundred twenty-five billion, seven hundred twenty million, seventy-nine thousand, six hundred thirty-nine".