2154240225 has 48 divisors (see below), whose sum is σ = 3962593600. Its totient is φ = 1147426560.

The previous prime is 2154240223. The next prime is 2154240247. The reversal of 2154240225 is 5220424512.

2154240225 is a `hidden beast` number, since 2 + 15 + 424 + 0 + 225 = 666.

It is not a de Polignac number, because 2154240225 - 2¹ = 2154240223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2154240223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 679494 + ... + 682656.

Almost surely, 2^2154240225 is an apocalyptic number.

2154240225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2154240225 is a deficient number, since it is larger than the sum of its proper divisors (1808353375).

2154240225 is a wasteful number, since it uses less digits than its factorization.

2154240225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4191 (or 4180 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2154240225 is about 46413.7934778014. The cubic root of 2154240225 is about 1291.5108042710.

Adding to 2154240225 its reverse (5220424512), we get a palindrome (7374664737).

The spelling of 2154240225 in words is "two billion, one hundred fifty-four million, two hundred forty thousand, two hundred twenty-five".