25684782 has 16 divisors (see below), whose sum is σ = 52212432. Its totient is φ = 8421120.

The previous prime is 25684781. The next prime is 25684811. The reversal of 25684782 is 28748652.

It is a happy number.

It is a super-3 number, since 3×25684782³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25684781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34723 + ... + 35454.

It is an arithmetic number, because the mean of its divisors is an integer number (3263277).

Almost surely, 2^25684782 is an apocalyptic number.

25684782 is an abundant number, since it is smaller than the sum of its proper divisors (26527650).

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

25684782 is a wasteful number, since it uses less digits than its factorization.

25684782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70243.

The product of its digits is 215040, while the sum is 42.

The square root of 25684782 is about 5068.0155879792. The cubic root of 25684782 is about 295.0475150889.

The spelling of 25684782 in words is "twenty-five million, six hundred eighty-four thousand, seven hundred eighty-two".