1543252225 has 12 divisors (see below), whose sum is σ = 1932582780. Its totient is φ = 1222376000.

The previous prime is 1543252223. The next prime is 1543252279. The reversal of 1543252225 is 5222523451.

It can be written as a sum of positive squares in 6 ways, for example, as 7160976 + 1536091249 = 2676^2 + 39193^2 .

It is not a de Polignac number, because 1543252225 - 2¹ = 1543252223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1543252223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 303070 + ... + 308119.

It is an arithmetic number, because the mean of its divisors is an integer number (161048565).

Almost surely, 2^1543252225 is an apocalyptic number.

It is an amenable number.

1543252225 is a deficient number, since it is larger than the sum of its proper divisors (389330555).

1543252225 is a wasteful number, since it uses less digits than its factorization.

1543252225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611300 (or 611295 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

The square root of 1543252225 is about 39284.2490700790. The cubic root of 1543252225 is about 1155.6126944218.

Adding to 1543252225 its reverse (5222523451), we get a palindrome (6765775676).

The spelling of 1543252225 in words is "one billion, five hundred forty-three million, two hundred fifty-two thousand, two hundred twenty-five".