1250001375125 has 16 divisors (see below), whose sum is σ = 1627827881472. Its totient is φ = 956522789200.

The previous prime is 1250001375043. The next prime is 1250001375127. The reversal of 1250001375125 is 5215731000521.

It is not a de Polignac number, because 1250001375125 - 2¹² = 1250001371029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1250001375091 and 1250001375100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250001375127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217388669 + ... + 217394418.

It is an arithmetic number, because the mean of its divisors is an integer number (101739242592).

Almost surely, 2^{1250001375125} is an apocalyptic number.

It is an amenable number.

1250001375125 is a deficient number, since it is larger than the sum of its proper divisors (377826506347).

1250001375125 is an equidigital number, since it uses as much as digits as its factorization.

1250001375125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434783125 (or 434783115 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 32.

Adding to 1250001375125 its reverse (5215731000521), we get a palindrome (6465732375646).

The spelling of 1250001375125 in words is "one trillion, two hundred fifty billion, one million, three hundred seventy-five thousand, one hundred twenty-five".