25773878 has 16 divisors (see below), whose sum is σ = 41783280. Its totient is φ = 11853216.

The previous prime is 25773877. The next prime is 25773893. The reversal of 25773878 is 87837752.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25773877) 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, 6368 + ... + 9596.

It is an arithmetic number, because the mean of its divisors is an integer number (2611455).

Almost surely, 2^25773878 is an apocalyptic number.

25773878 is a deficient number, since it is larger than the sum of its proper divisors (16009402).

25773878 is a wasteful number, since it uses less digits than its factorization.

25773878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551.

The product of its digits is 658560, while the sum is 47.

The square root of 25773878 is about 5076.7980066180. The cubic root of 25773878 is about 295.3882773895.

The spelling of 25773878 in words is "twenty-five million, seven hundred seventy-three thousand, eight hundred seventy-eight".