2225262661 has 4 divisors (see below), whose sum is σ = 2225370924. Its totient is φ = 2225154400.

The previous prime is 2225262647. The next prime is 2225262667. The reversal of 2225262661 is 1662625222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2220200161 + 5062500 = 47119^2 + 2250^2 .

It is a cyclic number.

It is not a de Polignac number, because 2225262661 - 2¹⁷ = 2225131589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2225262667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12760 + ... + 67921.

It is an arithmetic number, because the mean of its divisors is an integer number (556342731).

Almost surely, 2^2225262661 is an apocalyptic number.

It is an amenable number.

2225262661 is a deficient number, since it is larger than the sum of its proper divisors (108263).

2225262661 is an equidigital number, since it uses as much as digits as its factorization.

2225262661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108262.

The product of its digits is 34560, while the sum is 34.

The square root of 2225262661 is about 47172.6897791508. The cubic root of 2225262661 is about 1305.5507549394.

Adding to 2225262661 its reverse (1662625222), we get a palindrome (3887887883).

The spelling of 2225262661 in words is "two billion, two hundred twenty-five million, two hundred sixty-two thousand, six hundred sixty-one".