1025116716561 has 16 divisors (see below), whose sum is σ = 1577548783488. Its totient is φ = 579981168000.

The previous prime is 1025116716553. The next prime is 1025116716601. The reversal of 1025116716561 is 1656176115201.

It is not a de Polignac number, because 1025116716561 - 2³ = 1025116716553 is a prime.

It is a super-2 number, since 2×1025116716561² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1025116716461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241656700 + ... + 241660941.

It is an arithmetic number, because the mean of its divisors is an integer number (98596798968).

Almost surely, 2^{1025116716561} is an apocalyptic number.

It is an amenable number.

1025116716561 is a deficient number, since it is larger than the sum of its proper divisors (552432066927).

1025116716561 is a wasteful number, since it uses less digits than its factorization.

1025116716561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483317752.

The product of its (nonzero) digits is 75600, while the sum is 42.

The spelling of 1025116716561 in words is "one trillion, twenty-five billion, one hundred sixteen million, seven hundred sixteen thousand, five hundred sixty-one".