22049425 has 24 divisors (see below), whose sum is σ = 29964600. Its totient is φ = 16020480.

The previous prime is 22049413. The next prime is 22049429. The reversal of 22049425 is 52494022.

It can be written as a sum of positive squares in 12 ways, for example, as 221841 + 21827584 = 471^2 + 4672^2 .

It is not a de Polignac number, because 22049425 - 2⁷ = 22049297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22049393 and 22049402.

It is not an unprimeable number, because it can be changed into a prime (22049429) 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, 11431 + ... + 13219.

It is an arithmetic number, because the mean of its divisors is an integer number (1248525).

Almost surely, 2^22049425 is an apocalyptic number.

22049425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22049425 is a deficient number, since it is larger than the sum of its proper divisors (7915175).

22049425 is a wasteful number, since it uses less digits than its factorization.

22049425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845 (or 1840 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 22049425 is about 4695.6815266796. The cubic root of 22049425 is about 280.4136106602.

The spelling of 22049425 in words is "twenty-two million, forty-nine thousand, four hundred twenty-five".