25405316 has 6 divisors (see below), whose sum is σ = 44459310. Its totient is φ = 12702656.

The previous prime is 25405313. The next prime is 25405319. The reversal of 25405316 is 61350452.

It is an interprime number because it is at equal distance from previous prime (25405313) and next prime (25405319).

It can be written as a sum of positive squares in only one way, i.e., 17305600 + 8099716 = 4160^2 + 2846^2 .

It is not an unprimeable number, because it can be changed into a prime (25405313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3175661 + ... + 3175668.

It is an arithmetic number, because the mean of its divisors is an integer number (7409885).

Almost surely, 2^25405316 is an apocalyptic number.

It is an amenable number.

25405316 is a deficient number, since it is larger than the sum of its proper divisors (19053994).

25405316 is a wasteful number, since it uses less digits than its factorization.

25405316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6351333 (or 6351331 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 25405316 is about 5040.3686373122. The cubic root of 25405316 is about 293.9735117358.

Adding to 25405316 its reverse (61350452), we get a palindrome (86755768).

The spelling of 25405316 in words is "twenty-five million, four hundred five thousand, three hundred sixteen".