25042520541 has 4 divisors (see below), whose sum is σ = 33390027392. Its totient is φ = 16695013692.

The previous prime is 25042520519. The next prime is 25042520551. The reversal of 25042520541 is 14502524052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-25042520541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25042520499 and 25042520508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25042520551) 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, 4173753421 + ... + 4173753426.

It is an arithmetic number, because the mean of its divisors is an integer number (8347506848).

Almost surely, 2^25042520541 is an apocalyptic number.

It is an amenable number.

25042520541 is a deficient number, since it is larger than the sum of its proper divisors (8347506851).

25042520541 is an equidigital number, since it uses as much as digits as its factorization.

25042520541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8347506850.

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 25042520541 in words is "twenty-five billion, forty-two million, five hundred twenty thousand, five hundred forty-one".