22040025 has 24 divisors (see below), whose sum is σ = 41646144. Its totient is φ = 10075200.

The previous prime is 22040023. The next prime is 22040071. The reversal of 22040025 is 52004022.

It is not a de Polignac number, because 22040025 - 2¹ = 22040023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22039986 and 22040013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22040023) 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, 20466 + ... + 21515.

It is an arithmetic number, because the mean of its divisors is an integer number (1735256).

Almost surely, 2^22040025 is an apocalyptic number.

22040025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22040025 is a deficient number, since it is larger than the sum of its proper divisors (19606119).

22040025 is a wasteful number, since it uses less digits than its factorization.

22040025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42001 (or 41996 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 22040025 is about 4694.6805003110. The cubic root of 22040025 is about 280.3737568227.

Adding to 22040025 its reverse (52004022), we get a palindrome (74044047).

The spelling of 22040025 in words is "twenty-two million, forty thousand, twenty-five".