25345047 has 32 divisors (see below), whose sum is σ = 41868288. Its totient is φ = 13280256.

The previous prime is 25345039. The next prime is 25345051. The reversal of 25345047 is 74054352.

It is not a de Polignac number, because 25345047 - 2³ = 25345039 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25345027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71623 + ... + 71975.

It is an arithmetic number, because the mean of its divisors is an integer number (1308384).

Almost surely, 2^25345047 is an apocalyptic number.

25345047 is a deficient number, since it is larger than the sum of its proper divisors (16523241).

25345047 is a wasteful number, since it uses less digits than its factorization.

25345047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 25345047 is about 5034.3864571564. The cubic root of 25345047 is about 293.7408633344.

Adding to 25345047 its reverse (74054352), we get a palindrome (99399399).

The spelling of 25345047 in words is "twenty-five million, three hundred forty-five thousand, forty-seven".