25782917119 has 4 divisors (see below), whose sum is σ = 25931951496. Its totient is φ = 25633882744.

The previous prime is 25782917059. The next prime is 25782917129. The reversal of 25782917119 is 91171928752.

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 25782917119 - 2²³ = 25774528511 is a prime.

It is a super-2 number, since 2×25782917119² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25782917129) 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, 74516929 + ... + 74517274.

It is an arithmetic number, because the mean of its divisors is an integer number (6482987874).

Almost surely, 2^25782917119 is an apocalyptic number.

25782917119 is a deficient number, since it is larger than the sum of its proper divisors (149034377).

25782917119 is a wasteful number, since it uses less digits than its factorization.

25782917119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149034376.

The product of its digits is 635040, while the sum is 52.

The spelling of 25782917119 in words is "twenty-five billion, seven hundred eighty-two million, nine hundred seventeen thousand, one hundred nineteen".