190725757 has 2 divisors, whose sum is σ = 190725758. Its totient is φ = 190725756.

The previous prime is 190725749. The next prime is 190725761. The reversal of 190725757 is 757527091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182088036 + 8637721 = 13494^2 + 2939^2 .

It is a cyclic number.

It is not a de Polignac number, because 190725757 - 2³ = 190725749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190725707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95362878 + 95362879.

It is an arithmetic number, because the mean of its divisors is an integer number (95362879).

Almost surely, 2^190725757 is an apocalyptic number.

It is an amenable number.

190725757 is a deficient number, since it is larger than the sum of its proper divisors (1).

190725757 is an equidigital number, since it uses as much as digits as its factorization.

190725757 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 190725757 is about 13810.3496335176. The cubic root of 190725757 is about 575.6207607235.

The spelling of 190725757 in words is "one hundred ninety million, seven hundred twenty-five thousand, seven hundred fifty-seven".