22503725 has 6 divisors (see below), whose sum is σ = 27904650. Its totient is φ = 18002960.

The previous prime is 22503671. The next prime is 22503731. The reversal of 22503725 is 52730522.

It can be written as a sum of positive squares in 3 ways, for example, as 17161 + 22486564 = 131^2 + 4742^2 .

It is not a de Polignac number, because 22503725 - 2⁶ = 22503661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22503694 and 22503703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 450050 + ... + 450099.

It is an arithmetic number, because the mean of its divisors is an integer number (4650775).

Almost surely, 2^22503725 is an apocalyptic number.

22503725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22503725 is a deficient number, since it is larger than the sum of its proper divisors (5400925).

22503725 is an equidigital number, since it uses as much as digits as its factorization.

22503725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900159 (or 900154 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 22503725 is about 4743.8091234787. The cubic root of 22503725 is about 282.3263871789.

The spelling of 22503725 in words is "twenty-two million, five hundred three thousand, seven hundred twenty-five".