2505922905 has 16 divisors (see below), whose sum is σ = 4010339520. Its totient is φ = 1336204608.

The previous prime is 2505922891. The next prime is 2505922907. The reversal of 2505922905 is 5092295052.

It is not a de Polignac number, because 2505922905 - 2¹² = 2505918809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2505922907) 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 15 ways as a sum of consecutive naturals, for example, 67011 + ... + 97479.

It is an arithmetic number, because the mean of its divisors is an integer number (250646220).

Almost surely, 2^2505922905 is an apocalyptic number.

It is an amenable number.

2505922905 is a deficient number, since it is larger than the sum of its proper divisors (1504416615).

2505922905 is a wasteful number, since it uses less digits than its factorization.

2505922905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35960.

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 2505922905 is about 50059.1940106910. The cubic root of 2505922905 is about 1358.2797788195.

The spelling of 2505922905 in words is "two billion, five hundred five million, nine hundred twenty-two thousand, nine hundred five".