1219531325 has 24 divisors (see below), whose sum is σ = 1573613568. Its totient is φ = 936802880.

The previous prime is 1219531319. The next prime is 1219531381. The reversal of 1219531325 is 5231359121.

It is not a de Polignac number, because 1219531325 - 2⁸ = 1219531069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1219531291 and 1219531300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52484 + ... + 72066.

It is an arithmetic number, because the mean of its divisors is an integer number (65567232).

Almost surely, 2^1219531325 is an apocalyptic number.

It is an amenable number.

1219531325 is a deficient number, since it is larger than the sum of its proper divisors (354082243).

1219531325 is a wasteful number, since it uses less digits than its factorization.

1219531325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19693 (or 19688 counting only the distinct ones).

The product of its digits is 8100, while the sum is 32.

The square root of 1219531325 is about 34921.7886855757. The cubic root of 1219531325 is about 1068.3928838884.

The spelling of 1219531325 in words is "one billion, two hundred nineteen million, five hundred thirty-one thousand, three hundred twenty-five".