25609678 has 16 divisors (see below), whose sum is σ = 39168000. Its totient is φ = 12555576.

The previous prime is 25609657. The next prime is 25609679. The reversal of 25609678 is 87690652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25609679) 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 7 ways as a sum of consecutive naturals, for example, 51073 + ... + 51571.

It is an arithmetic number, because the mean of its divisors is an integer number (2448000).

Almost surely, 2^25609678 is an apocalyptic number.

25609678 is a deficient number, since it is larger than the sum of its proper divisors (13558322).

25609678 is a wasteful number, since it uses less digits than its factorization.

25609678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 25609678 is about 5060.6005572461. The cubic root of 25609678 is about 294.7596548546.

The spelling of 25609678 in words is "twenty-five million, six hundred nine thousand, six hundred seventy-eight".