25928406563 has 8 divisors (see below), whose sum is σ = 27296145600. Its totient is φ = 24560976168.

The previous prime is 25928406551. The next prime is 25928406571. The reversal of 25928406563 is 36560482952.

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

It is a cyclic number.

It is not a de Polignac number, because 25928406563 - 2⁴ = 25928406547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25928406583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106520 + ... + 251402.

It is an arithmetic number, because the mean of its divisors is an integer number (3412018200).

Almost surely, 2^25928406563 is an apocalyptic number.

25928406563 is a deficient number, since it is larger than the sum of its proper divisors (1367739037).

25928406563 is a wasteful number, since it uses less digits than its factorization.

25928406563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154321.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 25928406563 in words is "twenty-five billion, nine hundred twenty-eight million, four hundred six thousand, five hundred sixty-three".