1320904878925 has 24 divisors (see below), whose sum is σ = 1642749669792. Its totient is φ = 1053612888000.

The previous prime is 1320904878889. The next prime is 1320904878967. The reversal of 1320904878925 is 5298784090231.

It is not a de Polignac number, because 1320904878925 - 2¹¹ = 1320904876877 is a prime.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320904878925.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15019330 + ... + 15107020.

It is an arithmetic number, because the mean of its divisors is an integer number (68447902908).

Almost surely, 2^{1320904878925} is an apocalyptic number.

It is an amenable number.

1320904878925 is a deficient number, since it is larger than the sum of its proper divisors (321844790867).

1320904878925 is a wasteful number, since it uses less digits than its factorization.

1320904878925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89469 (or 89464 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 1320904878925 in words is "one trillion, three hundred twenty billion, nine hundred four million, eight hundred seventy-eight thousand, nine hundred twenty-five".