1325557 has 2 divisors, whose sum is σ = 1325558. Its totient is φ = 1325556.

The previous prime is 1325543. The next prime is 1325567. The reversal of 1325557 is 7555231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1285956 + 39601 = 1134^2 + 199^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325557 - 2¹⁵ = 1292789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1325567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662778 + 662779.

It is an arithmetic number, because the mean of its divisors is an integer number (662779).

2^1325557 is an apocalyptic number.

It is an amenable number.

1325557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325557 is an equidigital number, since it uses as much as digits as its factorization.

1325557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5250, while the sum is 28.

The square root of 1325557 is about 1151.3283632396. The cubic root of 1325557 is about 109.8498502356.

The spelling of 1325557 in words is "one million, three hundred twenty-five thousand, five hundred fifty-seven".