23145525 has 72 divisors (see below), whose sum is σ = 45971016. Its totient is φ = 11059200.

The previous prime is 23145487. The next prime is 23145527. The reversal of 23145525 is 52554132.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 19236996 + 3908529 = 4386^2 + 1977^2 .

It is not a de Polignac number, because 23145525 - 2¹² = 23141429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23145527) 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 71 ways as a sum of consecutive naturals, for example, 119829 + ... + 120021.

Almost surely, 2^23145525 is an apocalyptic number.

23145525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23145525 is a deficient number, since it is larger than the sum of its proper divisors (22825491).

23145525 is a wasteful number, since it uses less digits than its factorization.

23145525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 255 counting only the distinct ones).

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

The square root of 23145525 is about 4810.9796299714. The cubic root of 23145525 is about 284.9852254575.

Adding to 23145525 its reverse (52554132), we get a palindrome (75699657).

The spelling of 23145525 in words is "twenty-three million, one hundred forty-five thousand, five hundred twenty-five".