2225551521 has 8 divisors (see below), whose sum is σ = 2971787904. Its totient is φ = 1481508080.

The previous prime is 2225551519. The next prime is 2225551541. The reversal of 2225551521 is 1251555222.

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 2225551521 - 2¹ = 2225551519 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2225551501) 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, 545865 + ... + 549926.

It is an arithmetic number, because the mean of its divisors is an integer number (371473488).

Almost surely, 2^2225551521 is an apocalyptic number.

It is an amenable number.

2225551521 is a deficient number, since it is larger than the sum of its proper divisors (746236383).

2225551521 is a wasteful number, since it uses less digits than its factorization.

2225551521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096471.

The product of its digits is 10000, while the sum is 30.

The square root of 2225551521 is about 47175.7514089601. The cubic root of 2225551521 is about 1305.6072434132.

The spelling of 2225551521 in words is "two billion, two hundred twenty-five million, five hundred fifty-one thousand, five hundred twenty-one".