1275250125 has 32 divisors (see below), whose sum is σ = 2128523904.
Its totient is φ = 678048000.
The previous prime is 1275250057. The next prime is 1275250133. The reversal of 1275250125 is 5210525721.
Adding to 1275250125 its reverse (5210525721), we get a palindrome (6485775846).
It is not a de Polignac number, because 1275250125 - 223 = 1266861517 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 1275250092 and 1275250101.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121330 + ... + 131420.
It is an arithmetic number, because the mean of its divisors is an integer number (66516372).
Almost surely, 21275250125 is an apocalyptic number.
1275250125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
1275250125 is a deficient number, since it is larger than the sum of its proper divisors (853273779).
1275250125 is a wasteful number, since it uses less digits than its factorization.
1275250125 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10446 (or 10436 counting only the distinct ones).
The product of its (nonzero) digits is 7000, while the sum is 30.
The square root of 1275250125 is about 35710.6444215167.
The cubic root of 1275250125 is about 1084.4223460684.
The spelling of 1275250125 in words is "one billion, two hundred seventy-five million, two hundred fifty thousand, one hundred twenty-five".