8025764661 has 8 divisors (see below), whose sum is σ = 11890021760. Its totient is φ = 5350509756.

The previous prime is 8025764639. The next prime is 8025764687. The reversal of 8025764661 is 1664675208.

It is not a de Polignac number, because 8025764661 - 2⁵ = 8025764629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8025764611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148625245 + ... + 148625298.

It is an arithmetic number, because the mean of its divisors is an integer number (1486252720).

Almost surely, 2^8025764661 is an apocalyptic number.

It is an amenable number.

8025764661 is a deficient number, since it is larger than the sum of its proper divisors (3864257099).

8025764661 is a wasteful number, since it uses less digits than its factorization.

8025764661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297250552 (or 297250546 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 8025764661 is about 89586.6321556961. The cubic root of 8025764661 is about 2002.1447542757.

The spelling of 8025764661 in words is "eight billion, twenty-five million, seven hundred sixty-four thousand, six hundred sixty-one".