1250500505 has 4 divisors (see below), whose sum is σ = 1500600612. Its totient is φ = 1000400400.

The previous prime is 1250500499. The next prime is 1250500519. The reversal of 1250500505 is 5050050521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5050050521 = 24439 ⋅206639.

It can be written as a sum of positive squares in 2 ways, for example, as 539958169 + 710542336 = 23237^2 + 26656^2 .

It is not a de Polignac number, because 1250500505 - 2¹² = 1250496409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125050046 + ... + 125050055.

It is an arithmetic number, because the mean of its divisors is an integer number (375150153).

Almost surely, 2^1250500505 is an apocalyptic number.

It is an amenable number.

1250500505 is a deficient number, since it is larger than the sum of its proper divisors (250100107).

1250500505 is an equidigital number, since it uses as much as digits as its factorization.

1250500505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250100106.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 1250500505 is about 35362.4165605237. The cubic root of 1250500505 is about 1077.3610998756.

The spelling of 1250500505 in words is "one billion, two hundred fifty million, five hundred thousand, five hundred five".