225724271639 has 2 divisors, whose sum is σ = 225724271640. Its totient is φ = 225724271638.

The previous prime is 225724271629. The next prime is 225724271671. The reversal of 225724271639 is 936172427522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225724271639 - 2¹² = 225724267543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225724271629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112862135819 + 112862135820.

It is an arithmetic number, because the mean of its divisors is an integer number (112862135820).

Almost surely, 2^225724271639 is an apocalyptic number.

225724271639 is a deficient number, since it is larger than the sum of its proper divisors (1).

225724271639 is an equidigital number, since it uses as much as digits as its factorization.

225724271639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 50.

The spelling of 225724271639 in words is "two hundred twenty-five billion, seven hundred twenty-four million, two hundred seventy-one thousand, six hundred thirty-nine".