25830655 has 4 divisors (see below), whose sum is σ = 30996792. Its totient is φ = 20664520.

The previous prime is 25830653. The next prime is 25830689. The reversal of 25830655 is 55603852.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25830655 - 2¹ = 25830653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25830655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25830653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2583061 + ... + 2583070.

It is an arithmetic number, because the mean of its divisors is an integer number (7749198).

Almost surely, 2^25830655 is an apocalyptic number.

25830655 is a deficient number, since it is larger than the sum of its proper divisors (5166137).

25830655 is an equidigital number, since it uses as much as digits as its factorization.

25830655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5166136.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 25830655 is about 5082.3867424666. The cubic root of 25830655 is about 295.6050208716.

The spelling of 25830655 in words is "twenty-five million, eight hundred thirty thousand, six hundred fifty-five".