1325609549 has 8 divisors (see below), whose sum is σ = 1450000992. Its totient is φ = 1201865040.

The previous prime is 1325609533. The next prime is 1325609557. The reversal of 1325609549 is 9459065231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1325609549 - 2⁴ = 1325609533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325609449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157439 + ... + 165644.

It is an arithmetic number, because the mean of its divisors is an integer number (181250124).

Almost surely, 2^1325609549 is an apocalyptic number.

It is an amenable number.

1325609549 is a deficient number, since it is larger than the sum of its proper divisors (124391443).

1325609549 is a wasteful number, since it uses less digits than its factorization.

1325609549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323467.

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 1325609549 is about 36408.9212831141. The cubic root of 1325609549 is about 1098.5130180737.

The spelling of 1325609549 in words is "one billion, three hundred twenty-five million, six hundred nine thousand, five hundred forty-nine".