625778528263 has 4 divisors (see below), whose sum is σ = 715175460880. Its totient is φ = 536381595648.

The previous prime is 625778528261. The next prime is 625778528267. The reversal of 625778528263 is 362825877526.

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 625778528263 - 2¹ = 625778528261 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 (625778528261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44698466298 + ... + 44698466311.

It is an arithmetic number, because the mean of its divisors is an integer number (178793865220).

Almost surely, 2^625778528263 is an apocalyptic number.

625778528263 is a deficient number, since it is larger than the sum of its proper divisors (89396932617).

625778528263 is an equidigital number, since it uses as much as digits as its factorization.

625778528263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89396932616.

The product of its digits is 67737600, while the sum is 61.

The spelling of 625778528263 in words is "six hundred twenty-five billion, seven hundred seventy-eight million, five hundred twenty-eight thousand, two hundred sixty-three".