25210289 has 4 divisors (see below), whose sum is σ = 27149556. Its totient is φ = 23271024.

The previous prime is 25210279. The next prime is 25210313. The reversal of 25210289 is 98201252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3045025 + 22165264 = 1745^2 + 4708^2 .

It is a cyclic number.

It is not a de Polignac number, because 25210289 - 2¹⁶ = 25144753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25210279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 969614 + ... + 969639.

It is an arithmetic number, because the mean of its divisors is an integer number (6787389).

Almost surely, 2^25210289 is an apocalyptic number.

It is an amenable number.

25210289 is a deficient number, since it is larger than the sum of its proper divisors (1939267).

25210289 is a wasteful number, since it uses less digits than its factorization.

25210289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939266.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 25210289 is about 5020.9848635502. The cubic root of 25210289 is about 293.2193374480.

The spelling of 25210289 in words is "twenty-five million, two hundred ten thousand, two hundred eighty-nine".