2154648225 has 24 divisors (see below), whose sum is σ = 3564896832. Its totient is φ = 1148324800.

The previous prime is 2154648103. The next prime is 2154648229. The reversal of 2154648225 is 5228464512.

It is not a de Polignac number, because 2154648225 - 2²³ = 2146259617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2154648229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103819 + ... + 122831.

It is an arithmetic number, because the mean of its divisors is an integer number (148537368).

Almost surely, 2^2154648225 is an apocalyptic number.

2154648225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2154648225 is a deficient number, since it is larger than the sum of its proper divisors (1410248607).

2154648225 is a wasteful number, since it uses less digits than its factorization.

2154648225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20537 (or 20532 counting only the distinct ones).

The product of its digits is 153600, while the sum is 39.

The square root of 2154648225 is about 46418.1885148484. The cubic root of 2154648225 is about 1291.5923338886.

The spelling of 2154648225 in words is "two billion, one hundred fifty-four million, six hundred forty-eight thousand, two hundred twenty-five".