1205400325 has 6 divisors (see below), whose sum is σ = 1494696434. Its totient is φ = 964320240.

The previous prime is 1205400293. The next prime is 1205400347. The reversal of 1205400325 is 5230045021.

It can be written as a sum of positive squares in 3 ways, for example, as 407959204 + 797441121 = 20198^2 + 28239^2 .

It is not a de Polignac number, because 1205400325 - 2⁵ = 1205400293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1205400296 and 1205400305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24107982 + ... + 24108031.

Almost surely, 2^1205400325 is an apocalyptic number.

It is an amenable number.

1205400325 is a deficient number, since it is larger than the sum of its proper divisors (289296109).

1205400325 is an equidigital number, since it uses as much as digits as its factorization.

1205400325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48216023 (or 48216018 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1205400325 is about 34718.8756298357. The cubic root of 1205400325 is about 1064.2502676619.

Adding to 1205400325 its reverse (5230045021), we get a palindrome (6435445346).

The spelling of 1205400325 in words is "one billion, two hundred five million, four hundred thousand, three hundred twenty-five".