225021045 has 8 divisors (see below), whose sum is σ = 360033696. Its totient is φ = 120011216.

The previous prime is 225021023. The next prime is 225021053. The reversal of 225021045 is 540120522.

It is a happy number.

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 225021045 - 2⁶ = 225020981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7500687 + ... + 7500716.

It is an arithmetic number, because the mean of its divisors is an integer number (45004212).

Almost surely, 2^225021045 is an apocalyptic number.

It is an amenable number.

225021045 is a deficient number, since it is larger than the sum of its proper divisors (135012651).

225021045 is a wasteful number, since it uses less digits than its factorization.

225021045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15001411.

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

The square root of 225021045 is about 15000.7014835974. The cubic root of 225021045 is about 608.2391619204.

Adding to 225021045 its reverse (540120522), we get a palindrome (765141567).

The spelling of 225021045 in words is "two hundred twenty-five million, twenty-one thousand, forty-five".