23525145 has 72 divisors (see below), whose sum is σ = 48657024. Its totient is φ = 10479168.

The previous prime is 23525141. The next prime is 23525147. The reversal of 23525145 is 54152532.

It is a happy number.

It is not a de Polignac number, because 23525145 - 2² = 23525141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23525141) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 103522 + ... + 103748.

It is an arithmetic number, because the mean of its divisors is an integer number (675792).

Almost surely, 2^23525145 is an apocalyptic number.

It is an amenable number.

23525145 is an abundant number, since it is smaller than the sum of its proper divisors (25131879).

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

23525145 is a wasteful number, since it uses less digits than its factorization.

23525145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 289 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 23525145 is about 4850.2726727474. The cubic root of 23525145 is about 286.5348403853.

Adding to 23525145 its reverse (54152532), we get a palindrome (77677677).

The spelling of 23525145 in words is "twenty-three million, five hundred twenty-five thousand, one hundred forty-five".