1331610925 has 6 divisors (see below), whose sum is σ = 1651197578. Its totient is φ = 1065288720.

The previous prime is 1331610923. The next prime is 1331610977. The reversal of 1331610925 is 5290161331.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 436224996 + 895385929 = 20886^2 + 29923^2 .

It is not a de Polignac number, because 1331610925 - 2¹ = 1331610923 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331610923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26632194 + ... + 26632243.

Almost surely, 2^1331610925 is an apocalyptic number.

It is an amenable number.

1331610925 is a deficient number, since it is larger than the sum of its proper divisors (319586653).

1331610925 is an equidigital number, since it uses as much as digits as its factorization.

1331610925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53264447 (or 53264442 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 1331610925 is about 36491.2444978244. The cubic root of 1331610925 is about 1100.1682731551.

The spelling of 1331610925 in words is "one billion, three hundred thirty-one million, six hundred ten thousand, nine hundred twenty-five".