25555965 has 8 divisors (see below), whose sum is σ = 40889568. Its totient is φ = 13629840.

The previous prime is 25555961. The next prime is 25555979. The reversal of 25555965 is 56955552.

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

It is not a de Polignac number, because 25555965 - 2² = 25555961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25555961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 851851 + ... + 851880.

It is an arithmetic number, because the mean of its divisors is an integer number (5111196).

Almost surely, 2^25555965 is an apocalyptic number.

It is an amenable number.

25555965 is a deficient number, since it is larger than the sum of its proper divisors (15333603).

25555965 is a wasteful number, since it uses less digits than its factorization.

25555965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703739.

The product of its digits is 337500, while the sum is 42.

The square root of 25555965 is about 5055.2907928229. The cubic root of 25555965 is about 294.5534371494.

The spelling of 25555965 in words is "twenty-five million, five hundred fifty-five thousand, nine hundred sixty-five".