2581463505 has 16 divisors (see below), whose sum is σ = 4226397120. Its totient is φ = 1344762048.

The previous prime is 2581463503. The next prime is 2581463513. The reversal of 2581463505 is 5053641852.

It is not a de Polignac number, because 2581463505 - 2¹ = 2581463503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2581463503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2000490 + ... + 2001779.

It is an arithmetic number, because the mean of its divisors is an integer number (264149820).

Almost surely, 2^2581463505 is an apocalyptic number.

It is an amenable number.

2581463505 is a deficient number, since it is larger than the sum of its proper divisors (1644933615).

2581463505 is a wasteful number, since it uses less digits than its factorization.

2581463505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002320.

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 2581463505 is about 50808.1047176531. The cubic root of 2581463505 is about 1371.7932552687.

The spelling of 2581463505 in words is "two billion, five hundred eighty-one million, four hundred sixty-three thousand, five hundred five".