25142617 has 4 divisors (see below), whose sum is σ = 25617060. Its totient is φ = 24668176.

The previous prime is 25142599. The next prime is 25142627. The reversal of 25142617 is 71624152.

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 8667136 + 16475481 = 2944^2 + 4059^2 .

It is a cyclic number.

It is not a de Polignac number, because 25142617 - 2⁷ = 25142489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25142627) 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, 237142 + ... + 237247.

It is an arithmetic number, because the mean of its divisors is an integer number (6404265).

Almost surely, 2^25142617 is an apocalyptic number.

It is an amenable number.

25142617 is a deficient number, since it is larger than the sum of its proper divisors (474443).

25142617 is an equidigital number, since it uses as much as digits as its factorization.

25142617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474442.

The product of its digits is 3360, while the sum is 28.

The square root of 25142617 is about 5014.2414182008. The cubic root of 25142617 is about 292.9567393720.

Adding to 25142617 its reverse (71624152), we get a palindrome (96766769).

The spelling of 25142617 in words is "twenty-five million, one hundred forty-two thousand, six hundred seventeen".