25582778075 has 6 divisors (see below), whose sum is σ = 31722644844. Its totient is φ = 20466222440.

The previous prime is 25582778033. The next prime is 25582778099. The reversal of 25582778075 is 57087728552.

It is not a de Polignac number, because 25582778075 - 2²⁶ = 25515669211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25582778075.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 511655537 + ... + 511655586.

It is an arithmetic number, because the mean of its divisors is an integer number (5287107474).

Almost surely, 2^25582778075 is an apocalyptic number.

25582778075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25582778075 is a deficient number, since it is larger than the sum of its proper divisors (6139866769).

25582778075 is a wasteful number, since it uses less digits than its factorization.

25582778075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023311133 (or 1023311128 counting only the distinct ones).

The product of its (nonzero) digits is 10976000, while the sum is 56.

The spelling of 25582778075 in words is "twenty-five billion, five hundred eighty-two million, seven hundred seventy-eight thousand, seventy-five".