188342980225 has 81 divisors (see below), whose sum is σ = 251362272369. Its totient is φ = 139986201600.

The previous prime is 188342980213. The next prime is 188342980253. The reversal of 188342980225 is 522089243881.

The square root of 188342980225 is 433985.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 40 ways, for example, as 125870977089 + 62472003136 = 354783^2 + 249944^2 .

It is not a de Polignac number, because 188342980225 - 2³¹ = 186195496577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 2580040789 + ... + 2580040861.

Almost surely, 2^188342980225 is an apocalyptic number.

188342980225 is the 433985-th square number.

188342980225 is the 216993-rd centered octagonal number.

It is an amenable number.

188342980225 is a deficient number, since it is larger than the sum of its proper divisors (63019292144).

188342980225 is an frugal number, since it uses more digits than its factorization.

188342980225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 188342980225 in words is "one hundred eighty-eight billion, three hundred forty-two million, nine hundred eighty thousand, two hundred twenty-five".