25325443541 has 4 divisors (see below), whose sum is σ = 26815175532. Its totient is φ = 23835711552.

The previous prime is 25325443511. The next prime is 25325443567. The reversal of 25325443541 is 14534452352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17194814641 + 8130628900 = 131129^2 + 90170^2 .

It is a cyclic number.

It is not a de Polignac number, because 25325443541 - 2¹⁸ = 25325181397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25325443495 and 25325443504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25325443511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744865970 + ... + 744866003.

It is an arithmetic number, because the mean of its divisors is an integer number (6703793883).

Almost surely, 2^25325443541 is an apocalyptic number.

It is an amenable number.

25325443541 is a deficient number, since it is larger than the sum of its proper divisors (1489731991).

25325443541 is a wasteful number, since it uses less digits than its factorization.

25325443541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489731990.

The product of its digits is 288000, while the sum is 38.

Adding to 25325443541 its reverse (14534452352), we get a palindrome (39859895893).

The spelling of 25325443541 in words is "twenty-five billion, three hundred twenty-five million, four hundred forty-three thousand, five hundred forty-one".