6600525420 has 24 divisors (see below), whose sum is σ = 18481471344. Its totient is φ = 1760140096.

The previous prime is 6600525419. The next prime is 6600525431. The reversal of 6600525420 is 245250066.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55004319 + ... + 55004438.

It is an arithmetic number, because the mean of its divisors is an integer number (770061306).

Almost surely, 2^6600525420 is an apocalyptic number.

6600525420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6600525420 is an abundant number, since it is smaller than the sum of its proper divisors (11880945924).

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

6600525420 is a wasteful number, since it uses less digits than its factorization.

6600525420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110008769 (or 110008767 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 6600525420 is about 81243.6177185630. The cubic root of 6600525420 is about 1875.8272303587.

Adding to 6600525420 its reverse (245250066), we get a palindrome (6845775486).

The spelling of 6600525420 in words is "six billion, six hundred million, five hundred twenty-five thousand, four hundred twenty".