25648959 has 8 divisors (see below), whose sum is σ = 39084160. Its totient is φ = 14656536.

The previous prime is 25648951. The next prime is 25648969. The reversal of 25648959 is 95984652.

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

It is not a de Polignac number, because 25648959 - 2³ = 25648951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25648951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610669 + ... + 610710.

It is an arithmetic number, because the mean of its divisors is an integer number (4885520).

Almost surely, 2^25648959 is an apocalyptic number.

25648959 is a deficient number, since it is larger than the sum of its proper divisors (13435201).

25648959 is a wasteful number, since it uses less digits than its factorization.

25648959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221389.

The product of its digits is 777600, while the sum is 48.

The square root of 25648959 is about 5064.4801312672. The cubic root of 25648959 is about 294.9102820150.

The spelling of 25648959 in words is "twenty-five million, six hundred forty-eight thousand, nine hundred fifty-nine".