2225255581 has 2 divisors, whose sum is σ = 2225255582. Its totient is φ = 2225255580.

The previous prime is 2225255537. The next prime is 2225255621. The reversal of 2225255581 is 1855525222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2156116356 + 69139225 = 46434^2 + 8315^2 .

It is a cyclic number.

It is not a de Polignac number, because 2225255581 - 2¹³ = 2225247389 is a prime.

It is a super-2 number, since 2×2225255581² = 9903524801543295122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2225255581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2225255881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1112627790 + 1112627791.

It is an arithmetic number, because the mean of its divisors is an integer number (1112627791).

Almost surely, 2^2225255581 is an apocalyptic number.

It is an amenable number.

2225255581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2225255581 is an equidigital number, since it uses as much as digits as its factorization.

2225255581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80000, while the sum is 37.

The square root of 2225255581 is about 47172.6147356705. The cubic root of 2225255581 is about 1305.5493703374.

The spelling of 2225255581 in words is "two billion, two hundred twenty-five million, two hundred fifty-five thousand, five hundred eighty-one".