1325543077 has 4 divisors (see below), whose sum is σ = 1326167820. Its totient is φ = 1324918336.

The previous prime is 1325543053. The next prime is 1325543083. The reversal of 1325543077 is 7703455231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7703455231 = 59957 ⋅128483.

It can be written as a sum of positive squares in 2 ways, for example, as 430396516 + 895146561 = 20746^2 + 29919^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325543077 - 2²⁷ = 1191325349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325543017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309178 + ... + 313435.

It is an arithmetic number, because the mean of its divisors is an integer number (331541955).

Almost surely, 2^1325543077 is an apocalyptic number.

It is an amenable number.

1325543077 is a deficient number, since it is larger than the sum of its proper divisors (624743).

1325543077 is an equidigital number, since it uses as much as digits as its factorization.

1325543077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624742.

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 1325543077 is about 36408.0084184785. The cubic root of 1325543077 is about 1098.4946563125.

The spelling of 1325543077 in words is "one billion, three hundred twenty-five million, five hundred forty-three thousand, seventy-seven".