1250213405 has 16 divisors (see below), whose sum is σ = 1815436800. Its totient is φ = 806860032.

The previous prime is 1250213389. The next prime is 1250213411. The reversal of 1250213405 is 5043120521.

It is a cyclic number.

It is not a de Polignac number, because 1250213405 - 2⁴ = 1250213389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1050005 + ... + 1051194.

It is an arithmetic number, because the mean of its divisors is an integer number (113464800).

Almost surely, 2^1250213405 is an apocalyptic number.

It is an amenable number.

1250213405 is a deficient number, since it is larger than the sum of its proper divisors (565223395).

1250213405 is a wasteful number, since it uses less digits than its factorization.

1250213405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101228.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1250213405 is about 35358.3569329798. The cubic root of 1250213405 is about 1077.2786438124.

Adding to 1250213405 its reverse (5043120521), we get a palindrome (6293333926).

The spelling of 1250213405 in words is "one billion, two hundred fifty million, two hundred thirteen thousand, four hundred five".