22142425 has 12 divisors (see below), whose sum is σ = 27726400. Its totient is φ = 17539920.

The previous prime is 22142423. The next prime is 22142447. The reversal of 22142425 is 52424122.

It is not a de Polignac number, because 22142425 - 2¹ = 22142423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22142396 and 22142405.

It is not an unprimeable number, because it can be changed into a prime (22142423) 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, 1725 + ... + 6874.

Almost surely, 2^22142425 is an apocalyptic number.

22142425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22142425 is a deficient number, since it is larger than the sum of its proper divisors (5583975).

22142425 is a wasteful number, since it uses less digits than its factorization.

22142425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8712 (or 8707 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 22142425 is about 4705.5738226065. The cubic root of 22142425 is about 280.8073002447.

Adding to 22142425 its reverse (52424122), we get a palindrome (74566547).

The spelling of 22142425 in words is "twenty-two million, one hundred forty-two thousand, four hundred twenty-five".