22451025 has 24 divisors (see below), whose sum is σ = 37256544. Its totient is φ = 11929600.

The previous prime is 22451003. The next prime is 22451029. The reversal of 22451025 is 52015422.

It is a happy number.

It is not a de Polignac number, because 22451025 - 2⁵ = 22450993 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22450992 and 22451010.

It is not an unprimeable number, because it can be changed into a prime (22451029) 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, 34705 + ... + 35345.

It is an arithmetic number, because the mean of its divisors is an integer number (1552356).

Almost surely, 2^22451025 is an apocalyptic number.

22451025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22451025 is a deficient number, since it is larger than the sum of its proper divisors (14805519).

22451025 is a wasteful number, since it uses less digits than its factorization.

22451025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1116 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 22451025 is about 4738.2512596949. The cubic root of 22451025 is about 282.1058276916.

Adding to 22451025 its reverse (52015422), we get a palindrome (74466447).

The spelling of 22451025 in words is "twenty-two million, four hundred fifty-one thousand, twenty-five".