1325873957 has 2 divisors, whose sum is σ = 1325873958. Its totient is φ = 1325873956.

The previous prime is 1325873953. The next prime is 1325873959. The reversal of 1325873957 is 7593785231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 809630116 + 516243841 = 28454^2 + 22721^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325873957 - 2² = 1325873953 is a prime.

Together with 1325873959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1325873953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662936978 + 662936979.

It is an arithmetic number, because the mean of its divisors is an integer number (662936979).

Almost surely, 2^1325873957 is an apocalyptic number.

It is an amenable number.

1325873957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325873957 is an equidigital number, since it uses as much as digits as its factorization.

1325873957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1587600, while the sum is 50.

The square root of 1325873957 is about 36412.5521901445. The cubic root of 1325873957 is about 1098.5860502173.

The spelling of 1325873957 in words is "one billion, three hundred twenty-five million, eight hundred seventy-three thousand, nine hundred fifty-seven".