1248549238225 has 27 divisors (see below), whose sum is σ = 1557406881243. Its totient is φ = 992935128240.

The previous prime is 1248549238199. The next prime is 1248549238243. The reversal of 1248549238225 is 5228329458421.

The square root of 1248549238225 is 1117385.

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., 449477725761 + 799071512464 = 670431^2 + 893908^2 .

It is not a de Polignac number, because 1248549238225 - 2⁹ = 1248549237713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1111797514 + ... + 1111798636.

Almost surely, 2^{1248549238225} is an apocalyptic number.

1248549238225 is the 1117385-th square number.

1248549238225 is the 558693-rd centered octagonal number.

It is an amenable number.

1248549238225 is a deficient number, since it is larger than the sum of its proper divisors (308857643018).

1248549238225 is an frugal number, since it uses more digits than its factorization.

1248549238225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654 (or 1327 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 55.

The spelling of 1248549238225 in words is "one trillion, two hundred forty-eight billion, five hundred forty-nine million, two hundred thirty-eight thousand, two hundred twenty-five".