22002525 has 18 divisors (see below), whose sum is σ = 39409370. Its totient is φ = 11734560.

The previous prime is 22002511. The next prime is 22002557. The reversal of 22002525 is 52520022.

It can be written as a sum of positive squares in 3 ways, for example, as 1454436 + 20548089 = 1206^2 + 4533^2 .

It is not a de Polignac number, because 22002525 - 2⁴ = 22002509 is a prime.

It is a super-2 number, since 2×22002525² = 968222212751250, which contains 22 as substring.

22002525 is a modest number, since divided by 2525 gives 2200 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 22002498 and 22002507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 48670 + ... + 49119.

Almost surely, 2^22002525 is an apocalyptic number.

22002525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22002525 is a deficient number, since it is larger than the sum of its proper divisors (17406845).

22002525 is a wasteful number, since it uses less digits than its factorization.

22002525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97805 (or 97797 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 22002525 is about 4690.6849180050. The cubic root of 22002525 is about 280.2146525786.

Adding to 22002525 its reverse (52520022), we get a palindrome (74522547).

The spelling of 22002525 in words is "twenty-two million, two thousand, five hundred twenty-five".