201525131 has 2 divisors, whose sum is σ = 201525132. Its totient is φ = 201525130.

The previous prime is 201525113. The next prime is 201525161. The reversal of 201525131 is 131525102.

It is a happy number.

Together with previous prime (201525113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201525131 - 2⁶ = 201525067 is a prime.

It is a super-2 number, since 2×201525131² = 81224756849134322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201525161) 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, 100762565 + 100762566.

It is an arithmetic number, because the mean of its divisors is an integer number (100762566).

Almost surely, 2^201525131 is an apocalyptic number.

201525131 is a deficient number, since it is larger than the sum of its proper divisors (1).

201525131 is an equidigital number, since it uses as much as digits as its factorization.

201525131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 201525131 is about 14195.9547406999. The cubic root of 201525131 is about 586.2862884143.

The spelling of 201525131 in words is "two hundred one million, five hundred twenty-five thousand, one hundred thirty-one".