1250405005 has 8 divisors (see below), whose sum is σ = 1565724672. Its totient is φ = 956831568.

The previous prime is 1250404937. The next prime is 1250405011. The reversal of 1250405005 is 5005040521.

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 1250405005 - 2¹¹ = 1250402957 is a prime.

It is a Duffinian number.

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, 5436429 + ... + 5436658.

It is an arithmetic number, because the mean of its divisors is an integer number (195715584).

Almost surely, 2^1250405005 is an apocalyptic number.

It is an amenable number.

1250405005 is a deficient number, since it is larger than the sum of its proper divisors (315319667).

1250405005 is a wasteful number, since it uses less digits than its factorization.

1250405005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10873115.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 1250405005 is about 35361.0662310966. The cubic root of 1250405005 is about 1077.3336733628. Note that the first 3 decimals are identical.

Adding to 1250405005 its reverse (5005040521), we get a palindrome (6255445526).

The spelling of 1250405005 in words is "one billion, two hundred fifty million, four hundred five thousand, five".