22994425 has 12 divisors (see below), whose sum is σ = 28709100. Its totient is φ = 18269120.

The previous prime is 22994423. The next prime is 22994437. The reversal of 22994425 is 52449922.

It can be written as a sum of positive squares in 6 ways, for example, as 9715689 + 13278736 = 3117^2 + 3644^2 .

It is not a de Polignac number, because 22994425 - 2¹ = 22994423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22994423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 639 + ... + 6811.

It is an arithmetic number, because the mean of its divisors is an integer number (2392425).

Almost surely, 2^22994425 is an apocalyptic number.

22994425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22994425 is a deficient number, since it is larger than the sum of its proper divisors (5714675).

22994425 is a wasteful number, since it uses less digits than its factorization.

22994425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6332 (or 6327 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 22994425 is about 4795.2502541578. The cubic root of 22994425 is about 284.3637185075.

It can be divided in two parts, 2299 and 4425, that added together give a square (6724 = 82²).

The spelling of 22994425 in words is "twenty-two million, nine hundred ninety-four thousand, four hundred twenty-five".