1325250405 has 12 divisors (see below), whose sum is σ = 2297100780. Its totient is φ = 706800192.

The previous prime is 1325250401. The next prime is 1325250431. The reversal of 1325250405 is 5040525231.

It is a happy number.

1325250405 is a `hidden beast` number, since 1 + 3 + 2 + 5 + 250 + 405 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 661621284 + 663629121 = 25722^2 + 25761^2 .

It is not a de Polignac number, because 1325250405 - 2² = 1325250401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325250401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14724960 + ... + 14725049.

It is an arithmetic number, because the mean of its divisors is an integer number (191425065).

Almost surely, 2^1325250405 is an apocalyptic number.

1325250405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1325250405 is a deficient number, since it is larger than the sum of its proper divisors (971850375).

1325250405 is a wasteful number, since it uses less digits than its factorization.

1325250405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29450020 (or 29450017 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 1325250405 is about 36403.9888611125. The cubic root of 1325250405 is about 1098.4138033403.

Adding to 1325250405 its reverse (5040525231), we get a palindrome (6365775636).

The spelling of 1325250405 in words is "one billion, three hundred twenty-five million, two hundred fifty thousand, four hundred five".