195512500 has 36 divisors (see below), whose sum is σ = 427683564. Its totient is φ = 78200000.

The previous prime is 195512497. The next prime is 195512501. The reversal of 195512500 is 5215591.

195512500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 96589584 + 98922916 = 9828^2 + 9946^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195512501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4680 + ... + 20320.

It is an arithmetic number, because the mean of its divisors is an integer number (11880099).

Almost surely, 2^195512500 is an apocalyptic number.

195512500 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 195512500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213841782).

195512500 is an abundant number, since it is smaller than the sum of its proper divisors (232171064).

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

195512500 is an equidigital number, since it uses as much as digits as its factorization.

195512500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15670 (or 15648 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 195512500 is about 13982.5784460521. The cubic root of 195512500 is about 580.3965777656.

The spelling of 195512500 in words is "one hundred ninety-five million, five hundred twelve thousand, five hundred".