25799155 has 8 divisors (see below), whose sum is σ = 31185792. Its totient is φ = 20488128.

The previous prime is 25799141. The next prime is 25799159. The reversal of 25799155 is 55199752.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25799155 - 2¹⁹ = 25274867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25799159) 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, 18147 + ... + 19516.

It is an arithmetic number, because the mean of its divisors is an integer number (3898224).

Almost surely, 2^25799155 is an apocalyptic number.

25799155 is a deficient number, since it is larger than the sum of its proper divisors (5386637).

25799155 is a wasteful number, since it uses less digits than its factorization.

25799155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37805.

The product of its digits is 141750, while the sum is 43.

The square root of 25799155 is about 5079.2868593928. The cubic root of 25799155 is about 295.4848103980.

The spelling of 25799155 in words is "twenty-five million, seven hundred ninety-nine thousand, one hundred fifty-five".