1250434020505 has 4 divisors (see below), whose sum is σ = 1500520824612. Its totient is φ = 1000347216400.

The previous prime is 1250434020421. The next prime is 1250434020523. The reversal of 1250434020505 is 5050204340521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 487639649344 + 762794371161 = 698312^2 + 873381^2 .

It is not a de Polignac number, because 1250434020505 - 2¹³ = 1250434012313 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, 125043402046 + ... + 125043402055.

It is an arithmetic number, because the mean of its divisors is an integer number (375130206153).

Almost surely, 2^{1250434020505} is an apocalyptic number.

It is an amenable number.

1250434020505 is a deficient number, since it is larger than the sum of its proper divisors (250086804107).

1250434020505 is an equidigital number, since it uses as much as digits as its factorization.

1250434020505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250086804106.

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 1250434020505 in words is "one trillion, two hundred fifty billion, four hundred thirty-four million, twenty thousand, five hundred five".