198525629 has 2 divisors, whose sum is σ = 198525630. Its totient is φ = 198525628.

The previous prime is 198525611. The next prime is 198525641. The reversal of 198525629 is 926525891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196756729 + 1768900 = 14027^2 + 1330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198525629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198525529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99262814 + 99262815.

It is an arithmetic number, because the mean of its divisors is an integer number (99262815).

Almost surely, 2^198525629 is an apocalyptic number.

It is an amenable number.

198525629 is a deficient number, since it is larger than the sum of its proper divisors (1).

198525629 is an equidigital number, since it uses as much as digits as its factorization.

198525629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 47.

The square root of 198525629 is about 14089.9123134248. The cubic root of 198525629 is about 583.3629729339.

The spelling of 198525629 in words is "one hundred ninety-eight million, five hundred twenty-five thousand, six hundred twenty-nine".