22806025 has 24 divisors (see below), whose sum is σ = 31140864. Its totient is φ = 16430400.

The previous prime is 22806011. The next prime is 22806029. The reversal of 22806025 is 52060822.

It is a de Polignac number, because none of the positive numbers 2^k-22806025 is a prime.

It is a super-2 number, since 2×22806025² = 1040229552601250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22806029) 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, 34599 + ... + 35251.

It is an arithmetic number, because the mean of its divisors is an integer number (1297536).

Almost surely, 2^22806025 is an apocalyptic number.

22806025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22806025 is a deficient number, since it is larger than the sum of its proper divisors (8334839).

22806025 is a wasteful number, since it uses less digits than its factorization.

22806025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 22806025 is about 4775.5654115508. The cubic root of 22806025 is about 283.5849629272.

Adding to 22806025 its reverse (52060822), we get a palindrome (74866847).

The spelling of 22806025 in words is "twenty-two million, eight hundred six thousand, twenty-five".