1021304040425 has 12 divisors (see below), whose sum is σ = 1266556321740. Its totient is φ = 816953353920.

The previous prime is 1021304040413. The next prime is 1021304040509. The reversal of 1021304040425 is 5240404031201.

It can be written as a sum of positive squares in 6 ways, for example, as 23424914704 + 997879125721 = 153052^2 + 998939^2 .

It is not a de Polignac number, because 1021304040425 - 2¹² = 1021304036329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021304040394 and 1021304040403.

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, 2014682 + ... + 2470131.

It is an arithmetic number, because the mean of its divisors is an integer number (105546360145).

Almost surely, 2^{1021304040425} is an apocalyptic number.

It is an amenable number.

1021304040425 is a deficient number, since it is larger than the sum of its proper divisors (245252281315).

1021304040425 is an equidigital number, since it uses as much as digits as its factorization.

1021304040425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4493932 (or 4493927 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 1021304040425 its reverse (5240404031201), we get a palindrome (6261708071626).

The spelling of 1021304040425 in words is "one trillion, twenty-one billion, three hundred four million, forty thousand, four hundred twenty-five".