25645632230 has 8 divisors (see below), whose sum is σ = 46162138032. Its totient is φ = 10258252888.

The previous prime is 25645632197. The next prime is 25645632253. The reversal of 25645632230 is 3223654652.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282281602 + ... + 1282281621.

It is an arithmetic number, because the mean of its divisors is an integer number (5770267254).

Almost surely, 2^25645632230 is an apocalyptic number.

25645632230 is a deficient number, since it is larger than the sum of its proper divisors (20516505802).

25645632230 is a wasteful number, since it uses less digits than its factorization.

25645632230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564563230.

The product of its (nonzero) digits is 259200, while the sum is 38.

The spelling of 25645632230 in words is "twenty-five billion, six hundred forty-five million, six hundred thirty-two thousand, two hundred thirty".