25191085 has 8 divisors (see below), whose sum is σ = 30468096. Its totient is φ = 19993680.

The previous prime is 25191071. The next prime is 25191091. The reversal of 25191085 is 58019152.

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

It is not a de Polignac number, because 25191085 - 2⁹ = 25190573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19201 + ... + 20470.

It is an arithmetic number, because the mean of its divisors is an integer number (3808512).

Almost surely, 2^25191085 is an apocalyptic number.

It is an amenable number.

25191085 is a deficient number, since it is larger than the sum of its proper divisors (5277011).

25191085 is a wasteful number, since it uses less digits than its factorization.

25191085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39803.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 25191085 is about 5019.0721254033. The cubic root of 25191085 is about 293.1448650164.

The spelling of 25191085 in words is "twenty-five million, one hundred ninety-one thousand, eighty-five".