6636761325 has 168 divisors, whose sum is σ = 13505492736. Its totient is φ = 3219264000.

The previous prime is 6636761309. The next prime is 6636761353. The reversal of 6636761325 is 5231676366.

6636761325 is a `hidden beast` number, since 6 + 6 + 3 + 6 + 7 + 613 + 25 = 666.

It is not a de Polignac number, because 6636761325 - 2⁴ = 6636761309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 9604230 + ... + 9604920.

Almost surely, 2^6636761325 is an apocalyptic number.

It is an amenable number.

6636761325 is an abundant number, since it is smaller than the sum of its proper divisors (6868731411).

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

6636761325 is a wasteful number, since it uses less digits than its factorization.

6636761325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767 (or 747 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 6636761325 is about 81466.3201881612. The cubic root of 6636761325 is about 1879.2536388662.

The spelling of 6636761325 in words is "six billion, six hundred thirty-six million, seven hundred sixty-one thousand, three hundred twenty-five".