1250015125 has 8 divisors (see below), whose sum is σ = 1560019032. Its totient is φ = 1000012000.

The previous prime is 1250015119. The next prime is 1250015167. The reversal of 1250015125 is 5215100521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 65141041 + 1184874084 = 8071^2 + 34422^2 .

It is not a de Polignac number, because 1250015125 - 2⁹ = 1250014613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1250015096 and 1250015105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4999936 + ... + 5000185.

It is an arithmetic number, because the mean of its divisors is an integer number (195002379).

Almost surely, 2^1250015125 is an apocalyptic number.

It is an amenable number.

1250015125 is a deficient number, since it is larger than the sum of its proper divisors (310003907).

1250015125 is an equidigital number, since it uses as much as digits as its factorization.

1250015125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000136 (or 10000126 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 1250015125 is about 35355.5529584816. The cubic root of 1250015125 is about 1077.2216897750.

Adding to 1250015125 its reverse (5215100521), we get a palindrome (6465115646).

It can be divided in two parts, 12500 and 15125, that multiplied together give a square (189062500 = 13750²).

The spelling of 1250015125 in words is "one billion, two hundred fifty million, fifteen thousand, one hundred twenty-five".