201501225 has 72 divisors (see below), whose sum is σ = 376627680. Its totient is φ = 102896640.

The previous prime is 201501191. The next prime is 201501233. The reversal of 201501225 is 522105102.

It is not a de Polignac number, because 201501225 - 2²³ = 193112617 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201501198 and 201501207.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 570649 + ... + 571001.

It is an arithmetic number, because the mean of its divisors is an integer number (5230940).

Almost surely, 2^201501225 is an apocalyptic number.

201501225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201501225 is a deficient number, since it is larger than the sum of its proper divisors (175126455).

201501225 is a wasteful number, since it uses less digits than its factorization.

201501225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 201501225 is about 14195.1127152975. The cubic root of 201501225 is about 586.2631046817.

Adding to 201501225 its reverse (522105102), we get a palindrome (723606327).

The spelling of 201501225 in words is "two hundred one million, five hundred one thousand, two hundred twenty-five".