25688946 has 16 divisors (see below), whose sum is σ = 51887808. Its totient is φ = 8478000.

The previous prime is 25688933. The next prime is 25688977. The reversal of 25688946 is 64988652.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25688895 and 25688904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20590 + ... + 21801.

It is an arithmetic number, because the mean of its divisors is an integer number (3242988).

Almost surely, 2^25688946 is an apocalyptic number.

25688946 is an abundant number, since it is smaller than the sum of its proper divisors (26198862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25688946 is a wasteful number, since it uses less digits than its factorization.

25688946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42497.

The product of its digits is 829440, while the sum is 48.

The square root of 25688946 is about 5068.4263830108. The cubic root of 25688946 is about 295.0634585305.

The spelling of 25688946 in words is "twenty-five million, six hundred eighty-eight thousand, nine hundred forty-six".