2563145531 has 4 divisors (see below), whose sum is σ = 2580348000. Its totient is φ = 2545943064.

The previous prime is 2563145521. The next prime is 2563145567. The reversal of 2563145531 is 1355413652.

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 2563145531 - 2¹⁸ = 2562883387 is a prime.

It is a super-2 number, since 2×2563145531² = 13139430026170543922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2563145491 and 2563145500.

It is not an unprimeable number, because it can be changed into a prime (2563145521) 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 in 3 ways as a sum of consecutive naturals, for example, 8601011 + ... + 8601308.

It is an arithmetic number, because the mean of its divisors is an integer number (645087000).

Almost surely, 2^2563145531 is an apocalyptic number.

2563145531 is a deficient number, since it is larger than the sum of its proper divisors (17202469).

2563145531 is a wasteful number, since it uses less digits than its factorization.

2563145531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17202468.

The product of its digits is 54000, while the sum is 35.

The square root of 2563145531 is about 50627.5175275265. The cubic root of 2563145531 is about 1368.5408178456.

The spelling of 2563145531 in words is "two billion, five hundred sixty-three million, one hundred forty-five thousand, five hundred thirty-one".