25523545052041 has 4 divisors (see below), whose sum is σ = 25664559113284. Its totient is φ = 25382530990800.

The previous prime is 25523545052029. The next prime is 25523545052051. The reversal of 25523545052041 is 14025054532552.

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 12616561920400 + 12906983131641 = 3551980^2 + 3592629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25523545052041 is a prime.

It is a super-2 number, since 2×25523545052041² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25523545052011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70507030350 + ... + 70507030711.

It is an arithmetic number, because the mean of its divisors is an integer number (6416139778321).

Almost surely, 2^{25523545052041} is an apocalyptic number.

It is an amenable number.

25523545052041 is a deficient number, since it is larger than the sum of its proper divisors (141014061243).

25523545052041 is a wasteful number, since it uses less digits than its factorization.

25523545052041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141014061242.

The product of its (nonzero) digits is 1200000, while the sum is 43.

Adding to 25523545052041 its reverse (14025054532552), we get a palindrome (39548599584593).

The spelling of 25523545052041 in words is "twenty-five trillion, five hundred twenty-three billion, five hundred forty-five million, fifty-two thousand, forty-one".