197025757 has 2 divisors, whose sum is σ = 197025758. Its totient is φ = 197025756.

The previous prime is 197025749. The next prime is 197025769. The reversal of 197025757 is 757520791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139098436 + 57927321 = 11794^2 + 7611^2 .

It is an emirp because it is prime and its reverse (757520791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197025757 - 2³ = 197025749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197025727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98512878 + 98512879.

It is an arithmetic number, because the mean of its divisors is an integer number (98512879).

Almost surely, 2^197025757 is an apocalyptic number.

It is an amenable number.

197025757 is a deficient number, since it is larger than the sum of its proper divisors (1).

197025757 is an equidigital number, since it uses as much as digits as its factorization.

197025757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 154350, while the sum is 43.

The square root of 197025757 is about 14036.5863727617. The cubic root of 197025757 is about 581.8901445131.

The spelling of 197025757 in words is "one hundred ninety-seven million, twenty-five thousand, seven hundred fifty-seven".