6556665525 has 12 divisors (see below), whose sum is σ = 10840353792. Its totient is φ = 3496888240.

The previous prime is 6556665497. The next prime is 6556665539. The reversal of 6556665525 is 5255666556.

It is not a de Polignac number, because 6556665525 - 2⁶ = 6556665461 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43711029 + ... + 43711178.

It is an arithmetic number, because the mean of its divisors is an integer number (903362816).

Almost surely, 2^6556665525 is an apocalyptic number.

It is an amenable number.

6556665525 is a deficient number, since it is larger than the sum of its proper divisors (4283688267).

6556665525 is a wasteful number, since it uses less digits than its factorization.

6556665525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87422220 (or 87422215 counting only the distinct ones).

The product of its digits is 8100000, while the sum is 51.

The square root of 6556665525 is about 80973.2395609809. The cubic root of 6556665525 is about 1871.6630924374.

The spelling of 6556665525 in words is "six billion, five hundred fifty-six million, six hundred sixty-five thousand, five hundred twenty-five".