2561485411 has 4 divisors (see below), whose sum is σ = 2563779712. Its totient is φ = 2559191112.

The previous prime is 2561485397. The next prime is 2561485417. The reversal of 2561485411 is 1145841652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2561485411 - 2⁵ = 2561485379 is a prime.

It is a super-2 number, since 2×2561485411² = 13122415021531677842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2561485417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1145475 + ... + 1147708.

It is an arithmetic number, because the mean of its divisors is an integer number (640944928).

Almost surely, 2^2561485411 is an apocalyptic number.

2561485411 is a deficient number, since it is larger than the sum of its proper divisors (2294301).

2561485411 is a wasteful number, since it uses less digits than its factorization.

2561485411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294300.

The product of its digits is 38400, while the sum is 37.

The square root of 2561485411 is about 50611.1194402969. The cubic root of 2561485411 is about 1368.2452912963.

The spelling of 2561485411 in words is "two billion, five hundred sixty-one million, four hundred eighty-five thousand, four hundred eleven".