289379025 has 144 divisors (see below), whose sum is σ = 606627840. Its totient is φ = 130636800.

The previous prime is 289379021. The next prime is 289379029. The reversal of 289379025 is 520973982.

It is an interprime number because it is at equal distance from previous prime (289379021) and next prime (289379029).

It is not a de Polignac number, because 289379025 - 2² = 289379021 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (289379021) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2278512 + ... + 2278638.

Almost surely, 2^289379025 is an apocalyptic number.

289379025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

289379025 is an abundant number, since it is smaller than the sum of its proper divisors (317248815).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289379025 is a wasteful number, since it uses less digits than its factorization.

289379025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 289379025 is about 17011.1441414151. The cubic root of 289379025 is about 661.4378089870.

It can be divided in two parts, 2893 and 79025, that added together give a palindrome (81918).

The spelling of 289379025 in words is "two hundred eighty-nine million, three hundred seventy-nine thousand, twenty-five".