25525315 has 4 divisors (see below), whose sum is σ = 30630384. Its totient is φ = 20420248.

The previous prime is 25525243. The next prime is 25525319. The reversal of 25525315 is 51352552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25525315 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25525319) 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, 2552527 + ... + 2552536.

It is an arithmetic number, because the mean of its divisors is an integer number (7657596).

Almost surely, 2^25525315 is an apocalyptic number.

25525315 is a deficient number, since it is larger than the sum of its proper divisors (5105069).

25525315 is an equidigital number, since it uses as much as digits as its factorization.

25525315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105068.

The product of its digits is 7500, while the sum is 28.

The square root of 25525315 is about 5052.2584059013. The cubic root of 25525315 is about 294.4356345874.

Adding to 25525315 its reverse (51352552), we get a palindrome (76877867).

The spelling of 25525315 in words is "twenty-five million, five hundred twenty-five thousand, three hundred fifteen".