1323020725 has 36 divisors (see below), whose sum is σ = 1782865056. Its totient is φ = 973477440.

The previous prime is 1323020717. The next prime is 1323020737. The reversal of 1323020725 is 5270203231.

It is not a de Polignac number, because 1323020725 - 2³ = 1323020717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1323020725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2057254 + ... + 2057896.

Almost surely, 2^1323020725 is an apocalyptic number.

It is an amenable number.

1323020725 is a deficient number, since it is larger than the sum of its proper divisors (459844331).

1323020725 is a wasteful number, since it uses less digits than its factorization.

1323020725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 1323020725 is about 36373.3518526957. The cubic root of 1323020725 is about 1097.7974453361.

Adding to 1323020725 its reverse (5270203231), we get a palindrome (6593223956).

The spelling of 1323020725 in words is "one billion, three hundred twenty-three million, twenty thousand, seven hundred twenty-five".