22451325 has 24 divisors (see below), whose sum is σ = 39976608. Its totient is φ = 11052480.

The previous prime is 22451321. The next prime is 22451327. The reversal of 22451325 is 52315422.

It is not a de Polignac number, because 22451325 - 2² = 22451321 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22451295 and 22451304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22451321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10539 + ... + 12488.

It is an arithmetic number, because the mean of its divisors is an integer number (1665692).

Almost surely, 2^22451325 is an apocalyptic number.

22451325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22451325 is a deficient number, since it is larger than the sum of its proper divisors (17525283).

22451325 is a wasteful number, since it uses less digits than its factorization.

22451325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23053 (or 23048 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 22451325 is about 4738.2829168381. The cubic root of 22451325 is about 282.1070842247.

Adding to 22451325 its reverse (52315422), we get a palindrome (74766747).

It can be divided in two parts, 2245 and 1325, that added together give a triangular number (3570 = T₈₄).

The spelling of 22451325 in words is "twenty-two million, four hundred fifty-one thousand, three hundred twenty-five".