2563305340 has 12 divisors (see below), whose sum is σ = 5382941256. Its totient is φ = 1025322128.

The previous prime is 2563305319. The next prime is 2563305343. The reversal of 2563305340 is 435033652.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563305343) 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, 64082614 + ... + 64082653.

It is an arithmetic number, because the mean of its divisors is an integer number (448578438).

Almost surely, 2^2563305340 is an apocalyptic number.

2563305340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2563305340 is an abundant number, since it is smaller than the sum of its proper divisors (2819635916).

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

2563305340 is a wasteful number, since it uses less digits than its factorization.

2563305340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128165276 (or 128165274 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 31.

The square root of 2563305340 is about 50629.0957849338. The cubic root of 2563305340 is about 1368.5692595385.

Adding to 2563305340 its reverse (435033652), we get a palindrome (2998338992).

The spelling of 2563305340 in words is "two billion, five hundred sixty-three million, three hundred five thousand, three hundred forty".