190525081 has 2 divisors, whose sum is σ = 190525082. Its totient is φ = 190525080.

The previous prime is 190525079. The next prime is 190525117. The reversal of 190525081 is 180525091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177129481 + 13395600 = 13309^2 + 3660^2 .

It is a cyclic number.

It is not a de Polignac number, because 190525081 - 2¹ = 190525079 is a prime.

It is a super-2 number, since 2×190525081² = 72599612980113122, which contains 22 as substring.

Together with 190525079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (190525051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95262540 + 95262541.

It is an arithmetic number, because the mean of its divisors is an integer number (95262541).

Almost surely, 2^190525081 is an apocalyptic number.

It is an amenable number.

190525081 is a deficient number, since it is larger than the sum of its proper divisors (1).

190525081 is an equidigital number, since it uses as much as digits as its factorization.

190525081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 190525081 is about 13803.0823007037. The cubic root of 190525081 is about 575.4188061640.

The spelling of 190525081 in words is "one hundred ninety million, five hundred twenty-five thousand, eighty-one".