25408085 has 8 divisors (see below), whose sum is σ = 31313976. Its totient is φ = 19776960.

The previous prime is 25408079. The next prime is 25408087. The reversal of 25408085 is 58080452.

It can be written as a sum of positive squares in 4 ways, for example, as 15225604 + 10182481 = 3902^2 + 3191^2 .

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

It is not a de Polignac number, because 25408085 - 2²⁰ = 24359509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25408087) 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, 68486 + ... + 68855.

It is an arithmetic number, because the mean of its divisors is an integer number (3914247).

Almost surely, 2^25408085 is an apocalyptic number.

It is an amenable number.

25408085 is a deficient number, since it is larger than the sum of its proper divisors (5905891).

25408085 is a wasteful number, since it uses less digits than its factorization.

25408085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137383.

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 25408085 is about 5040.6433121180. The cubic root of 25408085 is about 293.9841916932.

The spelling of 25408085 in words is "twenty-five million, four hundred eight thousand, eighty-five".