25431316 has 12 divisors (see below), whose sum is σ = 45590580. Its totient is φ = 12405440.

The previous prime is 25431313. The next prime is 25431317. The reversal of 25431316 is 61313452.

It can be written as a sum of positive squares in 2 ways, for example, as 5664400 + 19766916 = 2380^2 + 4446^2 .

It is a super-3 number, since 3×25431316³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25431313) 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, 77371 + ... + 77698.

It is an arithmetic number, because the mean of its divisors is an integer number (3799215).

Almost surely, 2^25431316 is an apocalyptic number.

It is an amenable number.

25431316 is a deficient number, since it is larger than the sum of its proper divisors (20159264).

25431316 is a wasteful number, since it uses less digits than its factorization.

25431316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155114 (or 155112 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 25431316 is about 5042.9471541947. The cubic root of 25431316 is about 294.0737624783.

Adding to 25431316 its reverse (61313452), we get a palindrome (86744768).

The spelling of 25431316 in words is "twenty-five million, four hundred thirty-one thousand, three hundred sixteen".