23225140 has 24 divisors (see below), whose sum is σ = 49574952. Its totient is φ = 9137280.

The previous prime is 23225129. The next prime is 23225149. The reversal of 23225140 is 4152232.

23225140 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 2540836 + 20684304 = 1594^2 + 4548^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23225149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8299 + ... + 10738.

It is an arithmetic number, because the mean of its divisors is an integer number (2065623).

Almost surely, 2^23225140 is an apocalyptic number.

23225140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23225140 is an abundant number, since it is smaller than the sum of its proper divisors (26349812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23225140 is a wasteful number, since it uses less digits than its factorization.

23225140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19107 (or 19105 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 23225140 is about 4819.2468291217. The cubic root of 23225140 is about 285.3116115635.

Adding to 23225140 its reverse (4152232), we get a palindrome (27377372).

The spelling of 23225140 in words is "twenty-three million, two hundred twenty-five thousand, one hundred forty".