23225040 has 60 divisors (see below), whose sum is σ = 77999844. Its totient is φ = 6193152.

The previous prime is 23225021. The next prime is 23225047. The reversal of 23225040 is 4052232.

It can be written as a sum of positive squares in 2 ways, for example, as 7160976 + 16064064 = 2676^2 + 4008^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23225047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15409 + ... + 16848.

Almost surely, 2^23225040 is an apocalyptic number.

23225040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23225040 is an abundant number, since it is smaller than the sum of its proper divisors (54774804).

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

23225040 is a wasteful number, since it uses less digits than its factorization.

23225040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32276 (or 32267 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 23225040 is about 4819.2364540454. The cubic root of 23225040 is about 285.3112020761.

Adding to 23225040 its product of nonzero digits (480), we get a triangular number (23225520 = T₆₈₁₅).

Adding to 23225040 its reverse (4052232), we get a palindrome (27277272).

The spelling of 23225040 in words is "twenty-three million, two hundred twenty-five thousand, forty".