25316530 has 8 divisors (see below), whose sum is σ = 45569772. Its totient is φ = 10126608.

The previous prime is 25316527. The next prime is 25316567. The reversal of 25316530 is 3561352.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24890121 + 426409 = 4989^2 + 653^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 25316495 and 25316504.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265817 + ... + 1265836.

Almost surely, 2^25316530 is an apocalyptic number.

25316530 is a deficient number, since it is larger than the sum of its proper divisors (20253242).

25316530 is a wasteful number, since it uses less digits than its factorization.

25316530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531660.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 25316530 is about 5031.5534380547. The cubic root of 25316530 is about 293.6306544006.

Adding to 25316530 its reverse (3561352), we get a palindrome (28877882).

The spelling of 25316530 in words is "twenty-five million, three hundred sixteen thousand, five hundred thirty".