25432205 has 4 divisors (see below), whose sum is σ = 30518652. Its totient is φ = 20345760.

The previous prime is 25432163. The next prime is 25432213. The reversal of 25432205 is 50223452.

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 4519876 + 20912329 = 2126^2 + 4573^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25432205 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 3 ways as a sum of consecutive naturals, for example, 2543216 + ... + 2543225.

It is an arithmetic number, because the mean of its divisors is an integer number (7629663).

Almost surely, 2^25432205 is an apocalyptic number.

It is an amenable number.

25432205 is a deficient number, since it is larger than the sum of its proper divisors (5086447).

25432205 is an equidigital number, since it uses as much as digits as its factorization.

25432205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5086446.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 25432205 is about 5043.0352963270. The cubic root of 25432205 is about 294.0771890742.

Adding to 25432205 its reverse (50223452), we get a palindrome (75655657).

The spelling of 25432205 in words is "twenty-five million, four hundred thirty-two thousand, two hundred five".