12102825 has 24 divisors (see below), whose sum is σ = 22869568. Its totient is φ = 5532480.

The previous prime is 12102821. The next prime is 12102833. The reversal of 12102825 is 52820121.

12102825 = T₂₀₉ + T₂₁₀ + ... + T₄₃₃.

It is a happy number.

12102825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12102825 - 2² = 12102821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 6.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (12102821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11002 + ... + 12051.

Almost surely, 2^12102825 is an apocalyptic number.

12102825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12102825 is a deficient number, since it is larger than the sum of its proper divisors (10766743).

12102825 is a wasteful number, since it uses less digits than its factorization.

12102825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23073 (or 23068 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 12102825 is about 3478.9114676864. The cubic root of 12102825 is about 229.5949076092.

Adding to 12102825 its reverse (52820121), we get a palindrome (64922946).

The spelling of 12102825 in words is "twelve million, one hundred two thousand, eight hundred twenty-five".