1243552125 has 64 divisors (see below), whose sum is σ = 2214680832. Its totient is φ = 617472000.

The previous prime is 1243552117. The next prime is 1243552127. The reversal of 1243552125 is 5212553421.

It is not a de Polignac number, because 1243552125 - 2³ = 1243552117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1243552092 and 1243552101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243552127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 617370 + ... + 619380.

It is an arithmetic number, because the mean of its divisors is an integer number (34604388).

Almost surely, 2^1243552125 is an apocalyptic number.

1243552125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1243552125 is a deficient number, since it is larger than the sum of its proper divisors (971128707).

1243552125 is a wasteful number, since it uses less digits than its factorization.

1243552125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143 (or 2133 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 1243552125 is about 35264.0344402055. The cubic root of 1243552125 is about 1075.3619477073.

The spelling of 1243552125 in words is "one billion, two hundred forty-three million, five hundred fifty-two thousand, one hundred twenty-five".