25485205 has 4 divisors (see below), whose sum is σ = 30582252. Its totient is φ = 20388160.

The previous prime is 25485179. The next prime is 25485211. The reversal of 25485205 is 50258452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8625969 + 16859236 = 2937^2 + 4106^2 .

It is not a de Polignac number, because 25485205 - 2⁷ = 25485077 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 3 ways as a sum of consecutive naturals, for example, 2548516 + ... + 2548525.

It is an arithmetic number, because the mean of its divisors is an integer number (7645563).

Almost surely, 2^25485205 is an apocalyptic number.

It is an amenable number.

25485205 is a deficient number, since it is larger than the sum of its proper divisors (5097047).

25485205 is an equidigital number, since it uses as much as digits as its factorization.

25485205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097046.

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 25485205 is about 5048.2873333439. The cubic root of 25485205 is about 294.2813301956.

The spelling of 25485205 in words is "twenty-five million, four hundred eighty-five thousand, two hundred five".