1250865625 has 12 divisors (see below), whose sum is σ = 1563485868. Its totient is φ = 1000690000.

The previous prime is 1250865619. The next prime is 1250865647. The reversal of 1250865625 is 5265680521.

It can be written as a sum of positive squares in 6 ways, for example, as 668946496 + 581919129 = 25864^2 + 24123^2 .

It is not a de Polignac number, because 1250865625 - 2¹¹ = 1250863577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197014 + ... + 203263.

It is an arithmetic number, because the mean of its divisors is an integer number (130290489).

Almost surely, 2^1250865625 is an apocalyptic number.

It is an amenable number.

1250865625 is a deficient number, since it is larger than the sum of its proper divisors (312620243).

1250865625 is an frugal number, since it uses more digits than its factorization.

1250865625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400302 (or 400282 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 1250865625 is about 35367.5787268510. The cubic root of 1250865625 is about 1077.4659453100.

The spelling of 1250865625 in words is "one billion, two hundred fifty million, eight hundred sixty-five thousand, six hundred twenty-five".