22051525 has 6 divisors (see below), whose sum is σ = 27343922. Its totient is φ = 17641200.

The previous prime is 22051511. The next prime is 22051529. The reversal of 22051525 is 52515022.

It can be written as a sum of positive squares in 3 ways, for example, as 5134756 + 16916769 = 2266^2 + 4113^2 .

It is not a de Polignac number, because 22051525 - 2⁵ = 22051493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22051496 and 22051505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22051529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 441006 + ... + 441055.

Almost surely, 2^22051525 is an apocalyptic number.

22051525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22051525 is a deficient number, since it is larger than the sum of its proper divisors (5292397).

22051525 is an equidigital number, since it uses as much as digits as its factorization.

22051525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882071 (or 882066 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 22051525 is about 4695.9051310690. The cubic root of 22051525 is about 280.4225126291.

Adding to 22051525 its reverse (52515022), we get a palindrome (74566547).

The spelling of 22051525 in words is "twenty-two million, fifty-one thousand, five hundred twenty-five".