6925506505 has 4 divisors (see below), whose sum is σ = 8310607812. Its totient is φ = 5540405200.

The previous prime is 6925506493. The next prime is 6925506551. The reversal of 6925506505 is 5056055296.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1409176521 + 5516329984 = 37539^2 + 74272^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6925506505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 692550646 + ... + 692550655.

It is an arithmetic number, because the mean of its divisors is an integer number (2077651953).

Almost surely, 2^6925506505 is an apocalyptic number.

It is an amenable number.

6925506505 is a deficient number, since it is larger than the sum of its proper divisors (1385101307).

6925506505 is a wasteful number, since it uses less digits than its factorization.

6925506505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385101306.

The product of its (nonzero) digits is 405000, while the sum is 43.

The square root of 6925506505 is about 83219.6281234181. The cubic root of 6925506505 is about 1906.1212097097.

The spelling of 6925506505 in words is "six billion, nine hundred twenty-five million, five hundred six thousand, five hundred five".