25728404206 has 8 divisors (see below), whose sum is σ = 38593693224. Its totient is φ = 12863839800.

The previous prime is 25728404171. The next prime is 25728404243. The reversal of 25728404206 is 60240482752.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81400 + ... + 241003.

It is an arithmetic number, because the mean of its divisors is an integer number (4824211653).

Almost surely, 2^25728404206 is an apocalyptic number.

25728404206 is a deficient number, since it is larger than the sum of its proper divisors (12865289018).

25728404206 is a wasteful number, since it uses less digits than its factorization.

25728404206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362306.

The product of its (nonzero) digits is 215040, while the sum is 40.

Adding to 25728404206 its reverse (60240482752), we get a palindrome (85968886958).

The spelling of 25728404206 in words is "twenty-five billion, seven hundred twenty-eight million, four hundred four thousand, two hundred six".