12145525 has 12 divisors (see below), whose sum is σ = 17212192. Its totient is φ = 8328240.

The previous prime is 12145513. The next prime is 12145537. The reversal of 12145525 is 52554121.

It is an interprime number because it is at equal distance from previous prime (12145513) and next prime (12145537).

It is not a de Polignac number, because 12145525 - 2⁵ = 12145493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 12145525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34527 + ... + 34876.

Almost surely, 2^12145525 is an apocalyptic number.

It is an amenable number.

12145525 is a deficient number, since it is larger than the sum of its proper divisors (5066667).

12145525 is an equidigital number, since it uses as much as digits as its factorization.

12145525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69420 (or 69415 counting only the distinct ones).

The product of its digits is 2000, while the sum is 25.

The square root of 12145525 is about 3485.0430413411. The cubic root of 12145525 is about 229.8646020983.

Adding to 12145525 its reverse (52554121), we get a palindrome (64699646).

The spelling of 12145525 in words is "twelve million, one hundred forty-five thousand, five hundred twenty-five".