4921453849225 has 9 divisors (see below), whose sum is σ = 6102616527367. Its totient is φ = 3937154205640.

The previous prime is 4921453849223. The next prime is 4921453849231. The reversal of 4921453849225 is 5229483541294.

The square root of 4921453849225 is 2218435.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1771723385721 + 3149730463504 = 1331061^2 + 1774748^2 .

It is not a de Polignac number, because 4921453849225 - 2¹ = 4921453849223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4921453849225.

It is not an unprimeable number, because it can be changed into a prime (4921453849223) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10870332 + ... + 11314018.

Almost surely, 2^{4921453849225} is an apocalyptic number.

4921453849225 is the 2218435-th square number.

4921453849225 is the 1109218-th centered octagonal number.

It is an amenable number.

4921453849225 is a deficient number, since it is larger than the sum of its proper divisors (1181162678142).

4921453849225 is an frugal number, since it uses more digits than its factorization.

4921453849225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887384 (or 443692 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 58.

The spelling of 4921453849225 in words is "four trillion, nine hundred twenty-one billion, four hundred fifty-three million, eight hundred forty-nine thousand, two hundred twenty-five".