2825656565281 has 32 divisors (see below), whose sum is σ = 3121835738112. Its totient is φ = 2536205031360.

The previous prime is 2825656565269. The next prime is 2825656565299. The reversal of 2825656565281 is 1825656565282.

It is not a de Polignac number, because 2825656565281 - 2³¹ = 2823509081633 is a prime.

It is a super-2 number, since 2×2825656565281² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2825656565201) 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 31 ways as a sum of consecutive naturals, for example, 468053395 + ... + 468059431.

It is an arithmetic number, because the mean of its divisors is an integer number (97557366816).

Almost surely, 2^{2825656565281} is an apocalyptic number.

It is an amenable number.

2825656565281 is a deficient number, since it is larger than the sum of its proper divisors (296179172831).

2825656565281 is a wasteful number, since it uses less digits than its factorization.

2825656565281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7429.

The product of its digits is 69120000, while the sum is 61.

Subtracting from 2825656565281 its reverse (1825656565282), we obtain a palindrome (999999999999).

The spelling of 2825656565281 in words is "two trillion, eight hundred twenty-five billion, six hundred fifty-six million, five hundred sixty-five thousand, two hundred eighty-one".