22540375 has 48 divisors (see below), whose sum is σ = 33572448. Its totient is φ = 14976000.

The previous prime is 22540373. The next prime is 22540387. The reversal of 22540375 is 57304522.

It is not a de Polignac number, because 22540375 - 2¹ = 22540373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22540373) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 232327 + ... + 232423.

It is an arithmetic number, because the mean of its divisors is an integer number (699426).

Almost surely, 2^22540375 is an apocalyptic number.

22540375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22540375 is a deficient number, since it is larger than the sum of its proper divisors (11032073).

22540375 is a wasteful number, since it uses less digits than its factorization.

22540375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 22540375 is about 4747.6704814045. The cubic root of 22540375 is about 282.4795714468.

Adding to 22540375 its reverse (57304522), we get a palindrome (79844897).

The spelling of 22540375 in words is "twenty-two million, five hundred forty thousand, three hundred seventy-five".