1331325025 has 6 divisors (see below), whose sum is σ = 1650843062. Its totient is φ = 1065060000.

The previous prime is 1331324999. The next prime is 1331325043. The reversal of 1331325025 is 5205231331.

It can be written as a sum of positive squares in 3 ways, for example, as 91087936 + 1240237089 = 9544^2 + 35217^2 .

It is not a de Polignac number, because 1331325025 - 2⁵ = 1331324993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 53253001 = 1331325025 / (1 + 3 + 3 + 1 + 3 + 2 + 5 + 0 + 2 + 5).

It is a Duffinian 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, 26626476 + ... + 26626525.

Almost surely, 2^1331325025 is an apocalyptic number.

It is an amenable number.

1331325025 is a deficient number, since it is larger than the sum of its proper divisors (319518037).

1331325025 is an equidigital number, since it uses as much as digits as its factorization.

1331325025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53253011 (or 53253006 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 1331325025 is about 36487.3269094901. The cubic root of 1331325025 is about 1100.0895312802.

Adding to 1331325025 its reverse (5205231331), we get a palindrome (6536556356).

The spelling of 1331325025 in words is "one billion, three hundred thirty-one million, three hundred twenty-five thousand, twenty-five".