289120425 has 36 divisors (see below), whose sum is σ = 525435120. Its totient is φ = 140175200.

The previous prime is 289120423. The next prime is 289120463. The reversal of 289120425 is 524021982.

It is not a de Polignac number, because 289120425 - 2¹ = 289120423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (289120421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6855 + ... + 25004.

It is an arithmetic number, because the mean of its divisors is an integer number (14595420).

Almost surely, 2^289120425 is an apocalyptic number.

289120425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

289120425 is a deficient number, since it is larger than the sum of its proper divisors (236314695).

289120425 is a wasteful number, since it uses less digits than its factorization.

289120425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31894 (or 31878 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 289120425 is about 17003.5415428669. The cubic root of 289120425 is about 661.2407216845.

The spelling of 289120425 in words is "two hundred eighty-nine million, one hundred twenty thousand, four hundred twenty-five".