25505385 has 8 divisors (see below), whose sum is σ = 40808640. Its totient is φ = 13602864.

The previous prime is 25505383. The next prime is 25505411. The reversal of 25505385 is 58350552.

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

It is not a de Polignac number, because 25505385 - 2¹ = 25505383 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (25505383) 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, 850165 + ... + 850194.

It is an arithmetic number, because the mean of its divisors is an integer number (5101080).

Almost surely, 2^25505385 is an apocalyptic number.

It is an amenable number.

25505385 is a deficient number, since it is larger than the sum of its proper divisors (15303255).

25505385 is a wasteful number, since it uses less digits than its factorization.

25505385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700367.

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 25505385 is about 5050.2856354864. The cubic root of 25505385 is about 294.3589834913.

The spelling of 25505385 in words is "twenty-five million, five hundred five thousand, three hundred eighty-five".