25231345 has 16 divisors (see below), whose sum is σ = 31825152. Its totient is φ = 19166400.

The previous prime is 25231331. The next prime is 25231351. The reversal of 25231345 is 54313252.

It is not a de Polignac number, because 25231345 - 2¹⁹ = 24707057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16639 + ... + 18091.

It is an arithmetic number, because the mean of its divisors is an integer number (1989072).

Almost surely, 2^25231345 is an apocalyptic number.

It is an amenable number.

25231345 is a deficient number, since it is larger than the sum of its proper divisors (6593807).

25231345 is a wasteful number, since it uses less digits than its factorization.

25231345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632.

The product of its digits is 3600, while the sum is 25.

The square root of 25231345 is about 5023.0812257020. The cubic root of 25231345 is about 293.3009484162.

Adding to 25231345 its reverse (54313252), we get a palindrome (79544597).

The spelling of 25231345 in words is "twenty-five million, two hundred thirty-one thousand, three hundred forty-five".