22261325 has 18 divisors (see below), whose sum is σ = 28223454. Its totient is φ = 17417920.

The previous prime is 22261321. The next prime is 22261361. The reversal of 22261325 is 52316222.

It can be written as a sum of positive squares in 9 ways, for example, as 6666724 + 15594601 = 2582^2 + 3949^2 .

It is not a de Polignac number, because 22261325 - 2² = 22261321 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22261325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22261321) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 70067 + ... + 70383.

Almost surely, 2^22261325 is an apocalyptic number.

22261325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22261325 is a deficient number, since it is larger than the sum of its proper divisors (5962129).

22261325 is an equidigital number, since it uses as much as digits as its factorization.

22261325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 375 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 22261325 is about 4718.1908609127. The cubic root of 22261325 is about 281.3090279397.

Adding to 22261325 its reverse (52316222), we get a palindrome (74577547).

The spelling of 22261325 in words is "twenty-two million, two hundred sixty-one thousand, three hundred twenty-five".