194985225 has 30 divisors (see below), whose sum is σ = 361183790. Its totient is φ = 103991040.

The previous prime is 194985221. The next prime is 194985317. The reversal of 194985225 is 522589491.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 16842816 + 178142409 = 4104^2 + 13347^2 .

It is not a de Polignac number, because 194985225 - 2² = 194985221 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (194985221) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 46120 + ... + 50169.

Almost surely, 2^194985225 is an apocalyptic number.

194985225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194985225 is a deficient number, since it is larger than the sum of its proper divisors (166198565).

194985225 is an equidigital number, since it uses as much as digits as its factorization.

194985225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96311 (or 96297 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 194985225 is about 13963.7110038843. The cubic root of 194985225 is about 579.8743534805.

The spelling of 194985225 in words is "one hundred ninety-four million, nine hundred eighty-five thousand, two hundred twenty-five".