22425478 has 16 divisors (see below), whose sum is σ = 34760880. Its totient is φ = 10842336.

The previous prime is 22425457. The next prime is 22425517. The reversal of 22425478 is 87452422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12400 + ... + 14092.

It is an arithmetic number, because the mean of its divisors is an integer number (2172555).

Almost surely, 2^22425478 is an apocalyptic number.

22425478 is a deficient number, since it is larger than the sum of its proper divisors (12335402).

22425478 is a wasteful number, since it uses less digits than its factorization.

22425478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911.

The product of its digits is 35840, while the sum is 34.

The square root of 22425478 is about 4735.5546665623. The cubic root of 22425478 is about 281.9987844288.

The spelling of 22425478 in words is "twenty-two million, four hundred twenty-five thousand, four hundred seventy-eight".