195625553 has 2 divisors, whose sum is σ = 195625554. Its totient is φ = 195625552.

The previous prime is 195625541. The next prime is 195625559. The reversal of 195625553 is 355526591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116273089 + 79352464 = 10783^2 + 8908^2 .

It is a cyclic number.

It is not a de Polignac number, because 195625553 - 2⁴ = 195625537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195625553.

It is not a weakly prime, because it can be changed into another prime (195625559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97812776 + 97812777.

It is an arithmetic number, because the mean of its divisors is an integer number (97812777).

Almost surely, 2^195625553 is an apocalyptic number.

It is an amenable number.

195625553 is a deficient number, since it is larger than the sum of its proper divisors (1).

195625553 is an equidigital number, since it uses as much as digits as its factorization.

195625553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 202500, while the sum is 41.

The square root of 195625553 is about 13986.6204996060. The cubic root of 195625553 is about 580.5084255693.

The spelling of 195625553 in words is "one hundred ninety-five million, six hundred twenty-five thousand, five hundred fifty-three".