25682135 has 4 divisors (see below), whose sum is σ = 30818568. Its totient is φ = 20545704.

The previous prime is 25682131. The next prime is 25682141. The reversal of 25682135 is 53128652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25682135 - 2² = 25682131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25682131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2568209 + ... + 2568218.

It is an arithmetic number, because the mean of its divisors is an integer number (7704642).

Almost surely, 2^25682135 is an apocalyptic number.

25682135 is a deficient number, since it is larger than the sum of its proper divisors (5136433).

25682135 is an equidigital number, since it uses as much as digits as its factorization.

25682135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5136432.

The product of its digits is 14400, while the sum is 32.

The square root of 25682135 is about 5067.7544336718. The cubic root of 25682135 is about 295.0373791570.

The spelling of 25682135 in words is "twenty-five million, six hundred eighty-two thousand, one hundred thirty-five".