25730205 has 16 divisors (see below), whose sum is σ = 41243904. Its totient is φ = 13697600.

The previous prime is 25730203. The next prime is 25730209. The reversal of 25730205 is 50203752.

It is not a de Polignac number, because 25730205 - 2¹ = 25730203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25730203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9292 + ... + 11738.

It is an arithmetic number, because the mean of its divisors is an integer number (2577744).

Almost surely, 2^25730205 is an apocalyptic number.

It is an amenable number.

25730205 is a deficient number, since it is larger than the sum of its proper divisors (15513699).

25730205 is a wasteful number, since it uses less digits than its factorization.

25730205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 25730205 is about 5072.4949482479. The cubic root of 25730205 is about 295.2213411140.

Adding to 25730205 its reverse (50203752), we get a palindrome (75933957).

The spelling of 25730205 in words is "twenty-five million, seven hundred thirty thousand, two hundred five".