225202251 has 8 divisors (see below), whose sum is σ = 300363840. Its totient is φ = 150087752.

The previous prime is 225202181. The next prime is 225202261. The reversal of 225202251 is 152202522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225202251 - 2¹³ = 225194059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225202261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1540 + ... + 21278.

It is an arithmetic number, because the mean of its divisors is an integer number (37545480).

Almost surely, 2^225202251 is an apocalyptic number.

225202251 is a deficient number, since it is larger than the sum of its proper divisors (75161589).

225202251 is a wasteful number, since it uses less digits than its factorization.

225202251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23545.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 225202251 is about 15006.7401856632. The cubic root of 225202251 is about 608.4023866735.

Adding to 225202251 its reverse (152202522), we get a palindrome (377404773).

The spelling of 225202251 in words is "two hundred twenty-five million, two hundred two thousand, two hundred fifty-one".