1325209215 has 16 divisors (see below), whose sum is σ = 2313092736. Its totient is φ = 642525600.

The previous prime is 1325209153. The next prime is 1325209229. The reversal of 1325209215 is 5129025231.

It is not a de Polignac number, because 1325209215 - 2²⁵ = 1291654783 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, 4015621 + ... + 4015950.

It is an arithmetic number, because the mean of its divisors is an integer number (144568296).

Almost surely, 2^1325209215 is an apocalyptic number.

1325209215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1325209215 is a deficient number, since it is larger than the sum of its proper divisors (987883521).

1325209215 is a wasteful number, since it uses less digits than its factorization.

1325209215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8031590.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1325209215 is about 36403.4231220087. The cubic root of 1325209215 is about 1098.4024233191.

The spelling of 1325209215 in words is "one billion, three hundred twenty-five million, two hundred nine thousand, two hundred fifteen".