25605345 has 16 divisors (see below), whose sum is σ = 41041152. Its totient is φ = 13632000.

The previous prime is 25605343. The next prime is 25605379. The reversal of 25605345 is 54350652.

It is not a de Polignac number, because 25605345 - 2¹ = 25605343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25605341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10129 + ... + 12401.

It is an arithmetic number, because the mean of its divisors is an integer number (2565072).

Almost surely, 2^25605345 is an apocalyptic number.

It is an amenable number.

25605345 is a deficient number, since it is larger than the sum of its proper divisors (15435807).

25605345 is a wasteful number, since it uses less digits than its factorization.

25605345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 25605345 is about 5060.1724278922. The cubic root of 25605345 is about 294.7430300767.

Adding to 25605345 its reverse (54350652), we get a palindrome (79955997).

The spelling of 25605345 in words is "twenty-five million, six hundred five thousand, three hundred forty-five".