2154412232225 has 24 divisors (see below), whose sum is σ = 2916579645408. Its totient is φ = 1565636947200.

The previous prime is 2154412232221. The next prime is 2154412232237. The reversal of 2154412232225 is 5222322144512.

It is not a de Polignac number, because 2154412232225 - 2² = 2154412232221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2154412232221) 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, 2663459 + ... + 3376808.

It is an arithmetic number, because the mean of its divisors is an integer number (121524151892).

Almost surely, 2^{2154412232225} is an apocalyptic number.

2154412232225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2154412232225 is a deficient number, since it is larger than the sum of its proper divisors (762167413183).

2154412232225 is a wasteful number, since it uses less digits than its factorization.

2154412232225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6041585 (or 6041580 counting only the distinct ones).

The product of its digits is 76800, while the sum is 35.

Adding to 2154412232225 its reverse (5222322144512), we get a palindrome (7376734376737).

The spelling of 2154412232225 in words is "two trillion, one hundred fifty-four billion, four hundred twelve million, two hundred thirty-two thousand, two hundred twenty-five".