2505749473 has 4 divisors (see below), whose sum is σ = 2520233748. Its totient is φ = 2491265200.

The previous prime is 2505749453. The next prime is 2505749489. The reversal of 2505749473 is 3749475052.

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 1705029264 + 800720209 = 41292^2 + 28297^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505749473 - 2²¹ = 2503652321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2505749453) by changing a digit.

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, 7241878 + ... + 7242223.

It is an arithmetic number, because the mean of its divisors is an integer number (630058437).

Almost surely, 2^2505749473 is an apocalyptic number.

It is an amenable number.

2505749473 is a deficient number, since it is larger than the sum of its proper divisors (14484275).

2505749473 is a wasteful number, since it uses less digits than its factorization.

2505749473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14484274.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The square root of 2505749473 is about 50057.4617115171. The cubic root of 2505749473 is about 1358.2484431105.

The spelling of 2505749473 in words is "two billion, five hundred five million, seven hundred forty-nine thousand, four hundred seventy-three".