25628555783 has 4 divisors (see below), whose sum is σ = 26977427160. Its totient is φ = 24279684408.

The previous prime is 25628555779. The next prime is 25628555801. The reversal of 25628555783 is 38755582652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25628555783 - 2² = 25628555779 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25628555723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674435660 + ... + 674435697.

It is an arithmetic number, because the mean of its divisors is an integer number (6744356790).

Almost surely, 2^25628555783 is an apocalyptic number.

25628555783 is a deficient number, since it is larger than the sum of its proper divisors (1348871377).

25628555783 is a wasteful number, since it uses less digits than its factorization.

25628555783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348871376.

The product of its digits is 20160000, while the sum is 56.

The spelling of 25628555783 in words is "twenty-five billion, six hundred twenty-eight million, five hundred fifty-five thousand, seven hundred eighty-three".