22425515 has 16 divisors (see below), whose sum is σ = 31588032. Its totient is φ = 14961024.

The previous prime is 22425457. The next prime is 22425517. The reversal of 22425515 is 51552422.

It is not a de Polignac number, because 22425515 - 2¹⁰ = 22424491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22425517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7364 + ... + 9953.

It is an arithmetic number, because the mean of its divisors is an integer number (1974252).

Almost surely, 2^22425515 is an apocalyptic number.

22425515 is a deficient number, since it is larger than the sum of its proper divisors (9162517).

22425515 is a wasteful number, since it uses less digits than its factorization.

22425515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17366.

The product of its digits is 4000, while the sum is 26.

The square root of 22425515 is about 4735.5585731780. The cubic root of 22425515 is about 281.9989395195.

Adding to 22425515 its reverse (51552422), we get a palindrome (73977937).

The spelling of 22425515 in words is "twenty-two million, four hundred twenty-five thousand, five hundred fifteen".