25823067839 has 4 divisors (see below), whose sum is σ = 26078741880. Its totient is φ = 25567393800.

The previous prime is 25823067833. The next prime is 25823067889. The reversal of 25823067839 is 93876032852.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25823067839 is a prime.

It is a super-2 number, since 2×25823067839² (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 (25823067833) 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, 127836869 + ... + 127837070.

It is an arithmetic number, because the mean of its divisors is an integer number (6519685470).

Almost surely, 2^25823067839 is an apocalyptic number.

25823067839 is a deficient number, since it is larger than the sum of its proper divisors (255674041).

25823067839 is a wasteful number, since it uses less digits than its factorization.

25823067839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255674040.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 25823067839 in words is "twenty-five billion, eight hundred twenty-three million, sixty-seven thousand, eight hundred thirty-nine".