1325657 has 2 divisors, whose sum is σ = 1325658. Its totient is φ = 1325656.

The previous prime is 1325633. The next prime is 1325659. The reversal of 1325657 is 7565231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1038361 + 287296 = 1019^2 + 536^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325657 - 2¹⁶ = 1260121 is a prime.

Together with 1325659, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1325659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662828 + 662829.

It is an arithmetic number, because the mean of its divisors is an integer number (662829).

2^1325657 is an apocalyptic number.

It is an amenable number.

1325657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325657 is an equidigital number, since it uses as much as digits as its factorization.

1325657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 29.

The square root of 1325657 is about 1151.3717905177. The cubic root of 1325657 is about 109.8526125231.

The spelling of 1325657 in words is "one million, three hundred twenty-five thousand, six hundred fifty-seven".