25473089539 has 4 divisors (see below), whose sum is σ = 25831865520. Its totient is φ = 25114313560.

The previous prime is 25473089503. The next prime is 25473089557. The reversal of 25473089539 is 93598037452.

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 25473089539 - 2⁹ = 25473089027 is a prime.

It is a super-2 number, since 2×25473089539² (a number of 22 digits) contains 22 as substring.

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 25473089539.

It is not an unprimeable number, because it can be changed into a prime (25473089839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179387884 + ... + 179388025.

It is an arithmetic number, because the mean of its divisors is an integer number (6457966380).

Almost surely, 2^25473089539 is an apocalyptic number.

25473089539 is a deficient number, since it is larger than the sum of its proper divisors (358775981).

25473089539 is an equidigital number, since it uses as much as digits as its factorization.

25473089539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358775980.

The product of its (nonzero) digits is 8164800, while the sum is 55.

The spelling of 25473089539 in words is "twenty-five billion, four hundred seventy-three million, eighty-nine thousand, five hundred thirty-nine".