25666341 has 4 divisors (see below), whose sum is σ = 34221792. Its totient is φ = 17110892.

The previous prime is 25666337. The next prime is 25666349. The reversal of 25666341 is 14366652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25666341 - 2² = 25666337 is a prime.

It is a super-2 number, since 2×25666341² = 1317522120656562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25666349) 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, 4277721 + ... + 4277726.

It is an arithmetic number, because the mean of its divisors is an integer number (8555448).

Almost surely, 2^25666341 is an apocalyptic number.

It is an amenable number.

25666341 is a deficient number, since it is larger than the sum of its proper divisors (8555451).

25666341 is an equidigital number, since it uses as much as digits as its factorization.

25666341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8555450.

The product of its digits is 25920, while the sum is 33.

The square root of 25666341 is about 5066.1959101480. The cubic root of 25666341 is about 294.9768860565.

The spelling of 25666341 in words is "twenty-five million, six hundred sixty-six thousand, three hundred forty-one".