1245247125 has 32 divisors (see below), whose sum is σ = 2075988096. Its totient is φ = 662883200.

The previous prime is 1245247109. The next prime is 1245247151. The reversal of 1245247125 is 5217425421.

It is not a de Polignac number, because 1245247125 - 2⁴ = 1245247109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217297 + ... + 222953.

It is an arithmetic number, because the mean of its divisors is an integer number (64874628).

Almost surely, 2^1245247125 is an apocalyptic number.

1245247125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245247125 is a deficient number, since it is larger than the sum of its proper divisors (830740971).

1245247125 is an equidigital number, since it uses as much as digits as its factorization.

1245247125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6262 (or 6252 counting only the distinct ones).

The product of its digits is 22400, while the sum is 33.

The square root of 1245247125 is about 35288.0592410521. The cubic root of 1245247125 is about 1075.8503097528.

The spelling of 1245247125 in words is "one billion, two hundred forty-five million, two hundred forty-seven thousand, one hundred twenty-five".