133525485820 has 24 divisors (see below), whose sum is σ = 283125888864. Its totient is φ = 52891647936.

The previous prime is 133525485787. The next prime is 133525485889. The reversal of 133525485820 is 28584525331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32407039 + ... + 32411158.

It is an arithmetic number, because the mean of its divisors is an integer number (11796912036).

Almost surely, 2^133525485820 is an apocalyptic number.

133525485820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133525485820 is an abundant number, since it is smaller than the sum of its proper divisors (149600403044).

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

133525485820 is a wasteful number, since it uses less digits than its factorization.

133525485820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64818309 (or 64818307 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 46.

The spelling of 133525485820 in words is "one hundred thirty-three billion, five hundred twenty-five million, four hundred eighty-five thousand, eight hundred twenty".