1325797953489 has 45 divisors (see below), whose sum is σ = 2046957387321. Its totient is φ = 855146260440.

The previous prime is 1325797953479. The next prime is 1325797953499. The reversal of 1325797953489 is 9843597975231.

The square root of 1325797953489 is 1151433.

It is a perfect power (a square), and thus also a powerful number.

1325797953489 is a `hidden beast` number, since 1 + 3 + 2 + 5 + 7 + 9 + 7 + 9 + 534 + 89 = 666.

It is an interprime number because it is at equal distance from previous prime (1325797953479) and next prime (1325797953499).

It is not a de Polignac number, because 1325797953489 - 2²³ = 1325789564881 is a prime.

It is a super-3 number, since 3×1325797953489³ (a number of 37 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1325797953479) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 321247744 + ... + 321251870.

Almost surely, 2^{1325797953489} is an apocalyptic number.

1325797953489 is the 1151433-rd square number.

1325797953489 is the 575717-th centered octagonal number.

It is an amenable number.

1325797953489 is a deficient number, since it is larger than the sum of its proper divisors (721159433832).

1325797953489 is an frugal number, since it uses more digits than its factorization.

1325797953489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8328 (or 4161 counting only the distinct ones).

The product of its digits is 514382400, while the sum is 72.

The spelling of 1325797953489 in words is "one trillion, three hundred twenty-five billion, seven hundred ninety-seven million, nine hundred fifty-three thousand, four hundred eighty-nine".