22391425 has 12 divisors (see below), whose sum is σ = 31732096. Its totient is φ = 15354000.

The previous prime is 22391407. The next prime is 22391429. The reversal of 22391425 is 52419322.

It is not a de Polignac number, because 22391425 - 2⁷ = 22391297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22391393 and 22391402.

It is not an unprimeable number, because it can be changed into a prime (22391429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63801 + ... + 64150.

Almost surely, 2^22391425 is an apocalyptic number.

22391425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22391425 is a deficient number, since it is larger than the sum of its proper divisors (9340671).

22391425 is a wasteful number, since it uses less digits than its factorization.

22391425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127968 (or 127963 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 22391425 is about 4731.9578400489. The cubic root of 22391425 is about 281.8559741043.

The spelling of 22391425 in words is "twenty-two million, three hundred ninety-one thousand, four hundred twenty-five".