1325166967551 has 16 divisors (see below), whose sum is σ = 2022927381504. Its totient is φ = 755878766304.

The previous prime is 1325166967493. The next prime is 1325166967559. The reversal of 1325166967551 is 1557696615231.

It is a happy number.

It is not a de Polignac number, because 1325166967551 - 2²⁹ = 1324630096639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1325166967491 and 1325166967500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325166967559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56633895 + ... + 56657288.

It is an arithmetic number, because the mean of its divisors is an integer number (126432961344).

Almost surely, 2^{1325166967551} is an apocalyptic number.

1325166967551 is a deficient number, since it is larger than the sum of its proper divisors (697760413953).

1325166967551 is a wasteful number, since it uses less digits than its factorization.

1325166967551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113291750.

The product of its digits is 10206000, while the sum is 57.

The spelling of 1325166967551 in words is "one trillion, three hundred twenty-five billion, one hundred sixty-six million, nine hundred sixty-seven thousand, five hundred fifty-one".