6661525006 has 8 divisors (see below), whose sum is σ = 10426734864. Its totient is φ = 3185946720.

The previous prime is 6661524997. The next prime is 6661525007. The reversal of 6661525006 is 6005251666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661525007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72407835 + ... + 72407926.

It is an arithmetic number, because the mean of its divisors is an integer number (1303341858).

Almost surely, 2^6661525006 is an apocalyptic number.

6661525006 is a deficient number, since it is larger than the sum of its proper divisors (3765209858).

6661525006 is a wasteful number, since it uses less digits than its factorization.

6661525006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144815786.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 6661525006 is about 81618.1659068617. The cubic root of 6661525006 is about 1881.5880845259.

The spelling of 6661525006 in words is "six billion, six hundred sixty-one million, five hundred twenty-five thousand, six".