25865455 has 48 divisors (see below), whose sum is σ = 40771584. Its totient is φ = 15301440.

The previous prime is 25865453. The next prime is 25865459. The reversal of 25865455 is 55456852.

It is not a de Polignac number, because 25865455 - 2¹ = 25865453 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25865453) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203602 + ... + 203728.

It is an arithmetic number, because the mean of its divisors is an integer number (849408).

Almost surely, 2^25865455 is an apocalyptic number.

25865455 is a deficient number, since it is larger than the sum of its proper divisors (14906129).

25865455 is a wasteful number, since it uses less digits than its factorization.

25865455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 173 counting only the distinct ones).

The product of its digits is 240000, while the sum is 40.

The square root of 25865455 is about 5085.8091784887. The cubic root of 25865455 is about 295.7377112542.

The spelling of 25865455 in words is "twenty-five million, eight hundred sixty-five thousand, four hundred fifty-five".