12013525 has 6 divisors (see below), whose sum is σ = 14896802. Its totient is φ = 9610800.

The previous prime is 12013517. The next prime is 12013531. The reversal of 12013525 is 52531021.

It can be written as a sum of positive squares in 3 ways, for example, as 844561 + 11168964 = 919^2 + 3342^2 .

It is not a de Polignac number, because 12013525 - 2³ = 12013517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 240246 + ... + 240295.

Almost surely, 2^12013525 is an apocalyptic number.

It is an amenable number.

12013525 is a deficient number, since it is larger than the sum of its proper divisors (2883277).

12013525 is an equidigital number, since it uses as much as digits as its factorization.

12013525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480551 (or 480546 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 12013525 is about 3466.0532309819. The cubic root of 12013525 is about 229.0288287727.

Adding to 12013525 its reverse (52531021), we get a palindrome (64544546).

The spelling of 12013525 in words is "twelve million, thirteen thousand, five hundred twenty-five".