7957427505 has 16 divisors (see below), whose sum is σ = 12740803200. Its totient is φ = 4240988288.

The previous prime is 7957427447. The next prime is 7957427509. The reversal of 7957427505 is 5057247597.

It is a cyclic number.

It is not a de Polignac number, because 7957427505 - 2⁶ = 7957427441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7957427509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163605 + ... + 206594.

It is an arithmetic number, because the mean of its divisors is an integer number (796300200).

Almost surely, 2^7957427505 is an apocalyptic number.

It is an amenable number.

7957427505 is a deficient number, since it is larger than the sum of its proper divisors (4783375695).

7957427505 is a wasteful number, since it uses less digits than its factorization.

7957427505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371640.

The product of its (nonzero) digits is 3087000, while the sum is 51.

The square root of 7957427505 is about 89204.4141564755. The cubic root of 7957427505 is about 1996.4459802962.

The spelling of 7957427505 in words is "seven billion, nine hundred fifty-seven million, four hundred twenty-seven thousand, five hundred five".