1250350561321 has 8 divisors (see below), whose sum is σ = 1262853873864. Its totient is φ = 1237896186240.

The previous prime is 1250350561319. The next prime is 1250350561349. The reversal of 1250350561321 is 1231650530521.

It can be written as a sum of positive squares in 4 ways, for example, as 417988110400 + 832362450921 = 646520^2 + 912339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1250350561321 - 2¹ = 1250350561319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1250350567321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12183010 + ... + 12285211.

It is an arithmetic number, because the mean of its divisors is an integer number (157856734233).

Almost surely, 2^{1250350561321} is an apocalyptic number.

It is an amenable number.

1250350561321 is a deficient number, since it is larger than the sum of its proper divisors (12503312543).

1250350561321 is a wasteful number, since it uses less digits than its factorization.

1250350561321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24468731.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 1250350561321 in words is "one trillion, two hundred fifty billion, three hundred fifty million, five hundred sixty-one thousand, three hundred twenty-one".