23512525 has 6 divisors (see below), whose sum is σ = 29155562. Its totient is φ = 18810000.

The previous prime is 23512523. The next prime is 23512561. The reversal of 23512525 is 52521532.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4380649 + 19131876 = 2093^2 + 4374^2 .

It is not a de Polignac number, because 23512525 - 2¹ = 23512523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 940501 = 23512525 / (2 + 3 + 5 + 1 + 2 + 5 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23512525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23512523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 470226 + ... + 470275.

Almost surely, 2^23512525 is an apocalyptic number.

23512525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23512525 is a deficient number, since it is larger than the sum of its proper divisors (5643037).

23512525 is an equidigital number, since it uses as much as digits as its factorization.

23512525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940511 (or 940506 counting only the distinct ones).

The product of its digits is 3000, while the sum is 25.

The square root of 23512525 is about 4848.9715404403. The cubic root of 23512525 is about 286.4835942755.

The spelling of 23512525 in words is "twenty-three million, five hundred twelve thousand, five hundred twenty-five".