18525412 has 6 divisors (see below), whose sum is σ = 32419478. Its totient is φ = 9262704.

The previous prime is 18525407. The next prime is 18525431. The reversal of 18525412 is 21452581.

It can be written as a sum of positive squares in only one way, i.e., 12503296 + 6022116 = 3536^2 + 2454^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2315673 + ... + 2315680.

Almost surely, 2^18525412 is an apocalyptic number.

It is an amenable number.

18525412 is a deficient number, since it is larger than the sum of its proper divisors (13894066).

18525412 is a wasteful number, since it uses less digits than its factorization.

18525412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4631357 (or 4631355 counting only the distinct ones).

The product of its digits is 3200, while the sum is 28.

The square root of 18525412 is about 4304.1157047645. The cubic root of 18525412 is about 264.5996660814.

Adding to 18525412 its reverse (21452581), we get a palindrome (39977993).

The spelling of 18525412 in words is "eighteen million, five hundred twenty-five thousand, four hundred twelve".