25534545241 has 4 divisors (see below), whose sum is σ = 27036577332. Its totient is φ = 24032513152.

The previous prime is 25534545233. The next prime is 25534545271. The reversal of 25534545241 is 14254543552.

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 9884535241 + 15650010000 = 99421^2 + 125100^2 .

It is a cyclic number.

It is not a de Polignac number, because 25534545241 - 2³ = 25534545233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25534545194 and 25534545203.

It is not an unprimeable number, because it can be changed into a prime (25534545271) 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, 751016020 + ... + 751016053.

It is an arithmetic number, because the mean of its divisors is an integer number (6759144333).

Almost surely, 2^25534545241 is an apocalyptic number.

It is an amenable number.

25534545241 is a deficient number, since it is larger than the sum of its proper divisors (1502032091).

25534545241 is a wasteful number, since it uses less digits than its factorization.

25534545241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502032090.

The product of its digits is 480000, while the sum is 40.

The spelling of 25534545241 in words is "twenty-five billion, five hundred thirty-four million, five hundred forty-five thousand, two hundred forty-one".