2154550225 has 12 divisors (see below), whose sum is σ = 2675061424. Its totient is φ = 1721434320.

The previous prime is 2154550193. The next prime is 2154550243. The reversal of 2154550225 is 5220554512.

It is a happy number.

It is not a de Polignac number, because 2154550225 - 2⁵ = 2154550193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35079 + ... + 74428.

Almost surely, 2^2154550225 is an apocalyptic number.

2154550225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2154550225 is a deficient number, since it is larger than the sum of its proper divisors (520511199).

2154550225 is a wasteful number, since it uses less digits than its factorization.

2154550225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110304 (or 110299 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 2154550225 is about 46417.1328821589. The cubic root of 2154550225 is about 1291.5727517335.

The spelling of 2154550225 in words is "two billion, one hundred fifty-four million, five hundred fifty thousand, two hundred twenty-five".