25970617 has 4 divisors (see below), whose sum is σ = 26283600. Its totient is φ = 25657636.

The previous prime is 25970603. The next prime is 25970629. The reversal of 25970617 is 71607952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25970617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25970117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156367 + ... + 156532.

It is an arithmetic number, because the mean of its divisors is an integer number (6570900).

Almost surely, 2^25970617 is an apocalyptic number.

It is an amenable number.

25970617 is a deficient number, since it is larger than the sum of its proper divisors (312983).

25970617 is an equidigital number, since it uses as much as digits as its factorization.

25970617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312982.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 25970617 is about 5096.1374588996. The cubic root of 25970617 is about 296.1379660284.

It can be divided in two parts, 259 and 70617, that added together give a triangular number (70876 = T₃₇₆).

The spelling of 25970617 in words is "twenty-five million, nine hundred seventy thousand, six hundred seventeen".