25705230 has 16 divisors (see below), whose sum is σ = 61692624. Its totient is φ = 6854720.

The previous prime is 25705219. The next prime is 25705249. The reversal of 25705230 is 3250752.

It is a self number, because there is not a number n which added to its sum of digits gives 25705230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428391 + ... + 428450.

It is an arithmetic number, because the mean of its divisors is an integer number (3855789).

Almost surely, 2^25705230 is an apocalyptic number.

25705230 is an abundant number, since it is smaller than the sum of its proper divisors (35987394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25705230 is a wasteful number, since it uses less digits than its factorization.

25705230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856851.

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

The square root of 25705230 is about 5070.0325442742. The cubic root of 25705230 is about 295.1257914171.

Adding to 25705230 its reverse (3250752), we get a palindrome (28955982).

The spelling of 25705230 in words is "twenty-five million, seven hundred five thousand, two hundred thirty".