2581522316 has 6 divisors (see below), whose sum is σ = 4517664060. Its totient is φ = 1290761156.

The previous prime is 2581522313. The next prime is 2581522331. The reversal of 2581522316 is 6132251852.

It is not an unprimeable number, because it can be changed into a prime (2581522313) 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 as a sum of consecutive naturals, namely, 322690286 + ... + 322690293.

It is an arithmetic number, because the mean of its divisors is an integer number (752944010).

Almost surely, 2^2581522316 is an apocalyptic number.

It is an amenable number.

2581522316 is a deficient number, since it is larger than the sum of its proper divisors (1936141744).

2581522316 is a wasteful number, since it uses less digits than its factorization.

2581522316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645380583 (or 645380581 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 2581522316 is about 50808.6834704463. The cubic root of 2581522316 is about 1371.8036726050.

The spelling of 2581522316 in words is "two billion, five hundred eighty-one million, five hundred twenty-two thousand, three hundred sixteen".