158820725700 has 540 divisors, whose sum is σ = 644977893252. Its totient is φ = 33508339200.

The previous prime is 158820725641. The next prime is 158820725729. The reversal of 158820725700 is 7527028851.

158820725700 is a `hidden beast` number, since 1 + 5 + 8 + 8 + 2 + 0 + 72 + 570 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 35151750144 + 123668975556 = 187488^2 + 351666^2 .

It is a tau number, because it is divible by the number of its divisors (540).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 5144310 + ... + 5175090.

Almost surely, 2^158820725700 is an apocalyptic number.

158820725700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158820725700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322488946626).

158820725700 is an abundant number, since it is smaller than the sum of its proper divisors (486157167552).

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

158820725700 is a wasteful number, since it uses less digits than its factorization.

158820725700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30834 (or 30811 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 45.

The spelling of 158820725700 in words is "one hundred fifty-eight billion, eight hundred twenty million, seven hundred twenty-five thousand, seven hundred".