12665120025 has 48 divisors (see below), whose sum is σ = 21698293760. Its totient is φ = 6513998400.

The previous prime is 12665120023. The next prime is 12665120057. The reversal of 12665120025 is 52002156621.

It is not a de Polignac number, because 12665120025 - 2¹ = 12665120023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12665119974 and 12665120001.

It is not an unprimeable number, because it can be changed into a prime (12665120021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229920 + ... + 279630.

Almost surely, 2^12665120025 is an apocalyptic number.

12665120025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12665120025 is a deficient number, since it is larger than the sum of its proper divisors (9033173735).

12665120025 is a wasteful number, since it uses less digits than its factorization.

12665120025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49846 (or 49841 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 12665120025 its reverse (52002156621), we get a palindrome (64667276646).

The spelling of 12665120025 in words is "twelve billion, six hundred sixty-five million, one hundred twenty thousand, twenty-five".