289920923525 has 96 divisors (see below), whose sum is σ = 402780470400. Its totient is φ = 206111001600.

The previous prime is 289920923483. The next prime is 289920923531. The reversal of 289920923525 is 525329029982.

It is not a de Polignac number, because 289920923525 - 2³⁸ = 15043016581 is a prime.

It is a super-3 number, since 3×289920923525³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 69740747 + ... + 69744903.

It is an arithmetic number, because the mean of its divisors is an integer number (4195629900).

Almost surely, 2^289920923525 is an apocalyptic number.

289920923525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

289920923525 is a deficient number, since it is larger than the sum of its proper divisors (112859546875).

289920923525 is a wasteful number, since it uses less digits than its factorization.

289920923525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4359 (or 4354 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 56.

The spelling of 289920923525 in words is "two hundred eighty-nine billion, nine hundred twenty million, nine hundred twenty-three thousand, five hundred twenty-five".