320400201025 has 12 divisors (see below), whose sum is σ = 418206578800. Its totient is φ = 242829625680.

The previous prime is 320400201019. The next prime is 320400201049. The reversal of 320400201025 is 520102004023.

It is not a de Polignac number, because 320400201025 - 2²⁹ = 319863330113 is a prime.

It is a super-2 number, since 2×320400201025² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 320400200993 and 320400201011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337262895 + ... + 337263844.

Almost surely, 2^320400201025 is an apocalyptic number.

It is an amenable number.

320400201025 is a deficient number, since it is larger than the sum of its proper divisors (97806377775).

320400201025 is a wasteful number, since it uses less digits than its factorization.

320400201025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674526768 (or 674526763 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 320400201025 its reverse (520102004023), we get a palindrome (840502205048).

The spelling of 320400201025 in words is "three hundred twenty billion, four hundred million, two hundred one thousand, twenty-five".