23643525 has 12 divisors (see below), whose sum is σ = 39090752. Its totient is φ = 12609840.

The previous prime is 23643523. The next prime is 23643533. The reversal of 23643525 is 52534632.

It is not a de Polignac number, because 23643525 - 2¹ = 23643523 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23643492 and 23643501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23643523) 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 11 ways as a sum of consecutive naturals, for example, 157549 + ... + 157698.

Almost surely, 2^23643525 is an apocalyptic number.

23643525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23643525 is a deficient number, since it is larger than the sum of its proper divisors (15447227).

23643525 is a wasteful number, since it uses less digits than its factorization.

23643525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315260 (or 315255 counting only the distinct ones).

The product of its digits is 21600, while the sum is 30.

The square root of 23643525 is about 4862.4607967571. The cubic root of 23643525 is about 287.0146568694.

The spelling of 23643525 in words is "twenty-three million, six hundred forty-three thousand, five hundred twenty-five".