225201501 has 36 divisors (see below), whose sum is σ = 391470300. Its totient is φ = 124242048.

The previous prime is 225201497. The next prime is 225201503. The reversal of 225201501 is 105102522.

It can be written as a sum of positive squares in 2 ways, for example, as 143280900 + 81920601 = 11970^2 + 9051^2 .

It is not a de Polignac number, because 225201501 - 2² = 225201497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225201503) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3985 + ... + 21593.

It is an arithmetic number, because the mean of its divisors is an integer number (10874175).

Almost surely, 2^225201501 is an apocalyptic number.

225201501 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

225201501 is a deficient number, since it is larger than the sum of its proper divisors (166268799).

225201501 is a wasteful number, since it uses less digits than its factorization.

225201501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17658 (or 17648 counting only the distinct ones).

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

The square root of 225201501 is about 15006.7151968710. The cubic root of 225201501 is about 608.4017112772.

The spelling of 225201501 in words is "two hundred twenty-five million, two hundred one thousand, five hundred one".