22501505 has 24 divisors (see below), whose sum is σ = 30216960. Its totient is φ = 16061760.

The previous prime is 22501463. The next prime is 22501511. The reversal of 22501505 is 50510522.

It is not a de Polignac number, because 22501505 - 2⁶ = 22501441 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 25766 + ... + 26624.

It is an arithmetic number, because the mean of its divisors is an integer number (1259040).

Almost surely, 2^22501505 is an apocalyptic number.

It is an amenable number.

22501505 is a deficient number, since it is larger than the sum of its proper divisors (7715455).

22501505 is a wasteful number, since it uses less digits than its factorization.

22501505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 908 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 22501505 is about 4743.5751285291. The cubic root of 22501505 is about 282.3171030094.

The spelling of 22501505 in words is "twenty-two million, five hundred one thousand, five hundred five".