23725445 has 4 divisors (see below), whose sum is σ = 28470540. Its totient is φ = 18980352.

The previous prime is 23725441. The next prime is 23725453. The reversal of 23725445 is 54452732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5764801 + 17960644 = 2401^2 + 4238^2 .

It is a cyclic number.

It is not a de Polignac number, because 23725445 - 2² = 23725441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23725441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2372540 + ... + 2372549.

It is an arithmetic number, because the mean of its divisors is an integer number (7117635).

Almost surely, 2^23725445 is an apocalyptic number.

It is an amenable number.

23725445 is a deficient number, since it is larger than the sum of its proper divisors (4745095).

23725445 is an equidigital number, since it uses as much as digits as its factorization.

23725445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745094.

The product of its digits is 33600, while the sum is 32.

The square root of 23725445 is about 4870.8772310540. The cubic root of 23725445 is about 287.3457572137.

The spelling of 23725445 in words is "twenty-three million, seven hundred twenty-five thousand, four hundred forty-five".