13040025 has 12 divisors (see below), whose sum is σ = 21559632. Its totient is φ = 6954640.

The previous prime is 13039993. The next prime is 13040029. The reversal of 13040025 is 52004031.

It is not a de Polignac number, because 13040025 - 2⁵ = 13039993 is a prime.

It is a super-3 number, since 3×13040025³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13039986 and 13040013.

It is not an unprimeable number, because it can be changed into a prime (13040029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86859 + ... + 87008.

It is an arithmetic number, because the mean of its divisors is an integer number (1796636).

Almost surely, 2^13040025 is an apocalyptic number.

13040025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13040025 is a deficient number, since it is larger than the sum of its proper divisors (8519607).

13040025 is a wasteful number, since it uses less digits than its factorization.

13040025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173880 (or 173875 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 13040025 is about 3611.0974786067. The cubic root of 13040025 is about 235.3745347980.

Adding to 13040025 its reverse (52004031), we get a palindrome (65044056).

The spelling of 13040025 in words is "thirteen million, forty thousand, twenty-five".