2542542445 has 4 divisors (see below), whose sum is σ = 3051050940. Its totient is φ = 2034033952.

The previous prime is 2542542419. The next prime is 2542542461. The reversal of 2542542445 is 5442452452.

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 1413985609 + 1128556836 = 37603^2 + 33594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2542542445 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254254240 + ... + 254254249.

It is an arithmetic number, because the mean of its divisors is an integer number (762762735).

Almost surely, 2^2542542445 is an apocalyptic number.

It is an amenable number.

2542542445 is a deficient number, since it is larger than the sum of its proper divisors (508508495).

2542542445 is an equidigital number, since it uses as much as digits as its factorization.

2542542445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508508494.

The product of its digits is 256000, while the sum is 37.

The square root of 2542542445 is about 50423.6298276909. The cubic root of 2542542445 is about 1364.8640787432.

Adding to 2542542445 its reverse (5442452452), we get a palindrome (7984994897).

The spelling of 2542542445 in words is "two billion, five hundred forty-two million, five hundred forty-two thousand, four hundred forty-five".