25215017 has 8 divisors (see below), whose sum is σ = 25525920. Its totient is φ = 24906240.

The previous prime is 25214999. The next prime is 25215049. The reversal of 25215017 is 71051252.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25215017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25214983 and 25215001.

It is not an unprimeable number, because it can be changed into a prime (25215067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39017 + ... + 39657.

It is an arithmetic number, because the mean of its divisors is an integer number (3190740).

Almost surely, 2^25215017 is an apocalyptic number.

It is an amenable number.

25215017 is a deficient number, since it is larger than the sum of its proper divisors (310903).

25215017 is a wasteful number, since it uses less digits than its factorization.

25215017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 25215017 is about 5021.4556654420. The cubic root of 25215017 is about 293.2376666623.

Adding to 25215017 its reverse (71051252), we get a palindrome (96266269).

The spelling of 25215017 in words is "twenty-five million, two hundred fifteen thousand, seventeen".