25489845 has 12 divisors (see below), whose sum is σ = 44182476. Its totient is φ = 13594560.

The previous prime is 25489813. The next prime is 25489879. The reversal of 25489845 is 54898452.

It can be written as a sum of positive squares in 2 ways, for example, as 6749604 + 18740241 = 2598^2 + 4329^2 .

It is not a de Polignac number, because 25489845 - 2⁵ = 25489813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 566441 = 25489845 / (2 + 5 + 4 + 8 + 9 + 8 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 25489845.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 283176 + ... + 283265.

It is an arithmetic number, because the mean of its divisors is an integer number (3681873).

Almost surely, 2^25489845 is an apocalyptic number.

It is an amenable number.

25489845 is a deficient number, since it is larger than the sum of its proper divisors (18692631).

25489845 is a wasteful number, since it uses less digits than its factorization.

25489845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566452 (or 566449 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 25489845 is about 5048.7468742253. The cubic root of 25489845 is about 294.2991886945.

The spelling of 25489845 in words is "twenty-five million, four hundred eighty-nine thousand, eight hundred forty-five".