225551001 has 16 divisors (see below), whose sum is σ = 332623424. Its totient is φ = 135048384.

The previous prime is 225550993. The next prime is 225551003. The reversal of 225551001 is 100155522.

225551001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 225551001 - 2³ = 225550993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225551003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76711 + ... + 79596.

It is an arithmetic number, because the mean of its divisors is an integer number (20788964).

Almost surely, 2^225551001 is an apocalyptic number.

It is an amenable number.

225551001 is a deficient number, since it is larger than the sum of its proper divisors (107072423).

225551001 is a wasteful number, since it uses less digits than its factorization.

225551001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156360.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 225551001 is about 15018.3554692250. The cubic root of 225551001 is about 608.7162836224.

The spelling of 225551001 in words is "two hundred twenty-five million, five hundred fifty-one thousand, one".