25690878 has 64 divisors (see below), whose sum is σ = 59904000. Its totient is φ = 8151840.

The previous prime is 25690877. The next prime is 25690933. The reversal of 25690878 is 87809652.

25690878 is a `hidden beast` number, since 2 + 569 + 0 + 87 + 8 = 666.

It is a super-3 number, since 3×25690878³ (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 (25690877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172348 + ... + 172496.

It is an arithmetic number, because the mean of its divisors is an integer number (936000).

Almost surely, 2^25690878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25690878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29952000).

25690878 is an abundant number, since it is smaller than the sum of its proper divisors (34213122).

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

25690878 is a wasteful number, since it uses less digits than its factorization.

25690878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 25690878 is about 5068.6169711273. The cubic root of 25690878 is about 295.0708553348.

The spelling of 25690878 in words is "twenty-five million, six hundred ninety thousand, eight hundred seventy-eight".