25990205 has 8 divisors (see below), whose sum is σ = 31564512. Its totient is φ = 20541328.

The previous prime is 25990147. The next prime is 25990247. The reversal of 25990205 is 50209952.

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

It is a cyclic number.

It is not a de Polignac number, because 25990205 - 2⁶ = 25990141 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, 30899 + ... + 31728.

It is an arithmetic number, because the mean of its divisors is an integer number (3945564).

Almost surely, 2^25990205 is an apocalyptic number.

It is an amenable number.

25990205 is a deficient number, since it is larger than the sum of its proper divisors (5574307).

25990205 is an equidigital number, since it uses as much as digits as its factorization.

25990205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62715.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 25990205 is about 5098.0589443434. The cubic root of 25990205 is about 296.2124000539.

The spelling of 25990205 in words is "twenty-five million, nine hundred ninety thousand, two hundred five".