1320453025 has 12 divisors (see below), whose sum is σ = 1651855212. Its totient is φ = 1047011840.

The previous prime is 1320452989. The next prime is 1320453041. The reversal of 1320453025 is 5203540231.

It can be written as a sum of positive squares in 6 ways, for example, as 493372944 + 827080081 = 22212^2 + 28759^2 .

It is not a de Polignac number, because 1320453025 - 2⁹ = 1320452513 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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230884 + ... + 236533.

It is an arithmetic number, because the mean of its divisors is an integer number (137654601).

Almost surely, 2^1320453025 is an apocalyptic number.

It is an amenable number.

1320453025 is a deficient number, since it is larger than the sum of its proper divisors (331402187).

1320453025 is a wasteful number, since it uses less digits than its factorization.

1320453025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467540 (or 467535 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1320453025 is about 36338.0382657072. The cubic root of 1320453025 is about 1097.0867887838.

Adding to 1320453025 its reverse (5203540231), we get a palindrome (6523993256).

The spelling of 1320453025 in words is "one billion, three hundred twenty million, four hundred fifty-three thousand, twenty-five".