1325665403 has 2 divisors, whose sum is σ = 1325665404. Its totient is φ = 1325665402.

The previous prime is 1325665399. The next prime is 1325665427. The reversal of 1325665403 is 3045665231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1325665403 - 2² = 1325665399 is a prime.

It is a super-2 number, since 2×1325665403² = 3514777521422304818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1325665903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662832701 + 662832702.

It is an arithmetic number, because the mean of its divisors is an integer number (662832702).

Almost surely, 2^1325665403 is an apocalyptic number.

1325665403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325665403 is an equidigital number, since it uses as much as digits as its factorization.

1325665403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 1325665403 is about 36409.6883123160. The cubic root of 1325665403 is about 1098.5284463181.

The spelling of 1325665403 in words is "one billion, three hundred twenty-five million, six hundred sixty-five thousand, four hundred three".