22040525 has 24 divisors (see below), whose sum is σ = 29867880. Its totient is φ = 16035840.

The previous prime is 22040519. The next prime is 22040531. The reversal of 22040525 is 52504022.

It is an interprime number because it is at equal distance from previous prime (22040519) and next prime (22040531).

It can be written as a sum of positive squares in 12 ways, for example, as 15984004 + 6056521 = 3998^2 + 2461^2 .

It is not a de Polignac number, because 22040525 - 2⁶ = 22040461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22040497 and 22040506.

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 23 ways as a sum of consecutive naturals, for example, 23261 + ... + 24189.

It is an arithmetic number, because the mean of its divisors is an integer number (1244495).

Almost surely, 2^22040525 is an apocalyptic number.

22040525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22040525 is a deficient number, since it is larger than the sum of its proper divisors (7827355).

22040525 is a wasteful number, since it uses less digits than its factorization.

22040525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 22040525 is about 4694.7337517691. The cubic root of 22040525 is about 280.3758769930.

Adding to 22040525 its reverse (52504022), we get a palindrome (74544547).

The spelling of 22040525 in words is "twenty-two million, forty thousand, five hundred twenty-five".