25885855 has 8 divisors (see below), whose sum is σ = 31158864. Its totient is φ = 20644800.

The previous prime is 25885813. The next prime is 25885859. The reversal of 25885855 is 55858852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-25885855 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25885859) 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, 6166 + ... + 9475.

It is an arithmetic number, because the mean of its divisors is an integer number (3894858).

Almost surely, 2^25885855 is an apocalyptic number.

25885855 is a deficient number, since it is larger than the sum of its proper divisors (5273009).

25885855 is a wasteful number, since it uses less digits than its factorization.

25885855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15977.

The product of its digits is 640000, while the sum is 46.

The square root of 25885855 is about 5087.8143637519. The cubic root of 25885855 is about 295.8154399458.

The spelling of 25885855 in words is "twenty-five million, eight hundred eighty-five thousand, eight hundred fifty-five".