1325645 has 4 divisors (see below), whose sum is σ = 1590780. Its totient is φ = 1060512.

The previous prime is 1325633. The next prime is 1325657. The reversal of 1325645 is 5465231.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1325633) and next prime (1325657).

It can be written as a sum of positive squares in 2 ways, for example, as 769129 + 556516 = 877^2 + 746^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325645 - 2⁶ = 1325581 is a prime.

It is a super-3 number, since 3×1325645³ = 6988805740028133375, which contains 333 as substring.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132560 + ... + 132569.

It is an arithmetic number, because the mean of its divisors is an integer number (397695).

2^1325645 is an apocalyptic number.

It is an amenable number.

1325645 is a deficient number, since it is larger than the sum of its proper divisors (265135).

1325645 is an equidigital number, since it uses as much as digits as its factorization.

1325645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265134.

The product of its digits is 3600, while the sum is 26.

The square root of 1325645 is about 1151.3665793308. The cubic root of 1325645 is about 109.8522810559.

The spelling of 1325645 in words is "one million, three hundred twenty-five thousand, six hundred forty-five".