25130617 has 4 divisors (see below), whose sum is σ = 25997220. Its totient is φ = 24264016.

The previous prime is 25130603. The next prime is 25130627. The reversal of 25130617 is 71603152.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11669056 + 13461561 = 3416^2 + 3669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25130617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25130591 and 25130600.

It is not an unprimeable number, because it can be changed into a prime (25130627) 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, 433258 + ... + 433315.

It is an arithmetic number, because the mean of its divisors is an integer number (6499305).

Almost surely, 2^25130617 is an apocalyptic number.

It is an amenable number.

25130617 is a deficient number, since it is larger than the sum of its proper divisors (866603).

25130617 is an equidigital number, since it uses as much as digits as its factorization.

25130617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866602.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 25130617 is about 5013.0446836229. The cubic root of 25130617 is about 292.9101247561.

Adding to 25130617 its reverse (71603152), we get a palindrome (96733769).

It can be divided in two parts, 251 and 30617, that multiplied together give a palindrome (7684867).

The spelling of 25130617 in words is "twenty-five million, one hundred thirty thousand, six hundred seventeen".