201525215 has 4 divisors (see below), whose sum is σ = 241830264. Its totient is φ = 161220168.

The previous prime is 201525211. The next prime is 201525223. The reversal of 201525215 is 512525102.

201525215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201525215 - 2² = 201525211 is a prime.

It is a super-2 number, since 2×201525215² = 81224824561592450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201525211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20152517 + ... + 20152526.

It is an arithmetic number, because the mean of its divisors is an integer number (60457566).

Almost surely, 2^201525215 is an apocalyptic number.

201525215 is a deficient number, since it is larger than the sum of its proper divisors (40305049).

201525215 is an equidigital number, since it uses as much as digits as its factorization.

201525215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40305048.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 201525215 is about 14195.9576992889. The cubic root of 201525215 is about 586.2863698732.

The spelling of 201525215 in words is "two hundred one million, five hundred twenty-five thousand, two hundred fifteen".