2561305302 has 48 divisors (see below), whose sum is σ = 5651388288. Its totient is φ = 838200960.

The previous prime is 2561305297. The next prime is 2561305303. The reversal of 2561305302 is 2035031652.

2561305302 is a `hidden beast` number, since 2 + 56 + 1 + 305 + 302 = 666.

2561305302 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2561305302² = 13120569700106622408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561305303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 288652 + ... + 297392.

It is an arithmetic number, because the mean of its divisors is an integer number (117737256).

Almost surely, 2^2561305302 is an apocalyptic number.

2561305302 is an abundant number, since it is smaller than the sum of its proper divisors (3090082986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2561305302 is a wasteful number, since it uses less digits than its factorization.

2561305302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9045 (or 9042 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 2561305302 is about 50609.3400668296. The cubic root of 2561305302 is about 1368.2132214842.

Adding to 2561305302 its reverse (2035031652), we get a palindrome (4596336954).

The spelling of 2561305302 in words is "two billion, five hundred sixty-one million, three hundred five thousand, three hundred two".