25489873 has 4 divisors (see below), whose sum is σ = 25970868. Its totient is φ = 25008880.

The previous prime is 25489813. The next prime is 25489879. The reversal of 25489873 is 37898452.

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 18766224 + 6723649 = 4332^2 + 2593^2 .

It is a cyclic number.

It is not a de Polignac number, because 25489873 - 2¹³ = 25481681 is a prime.

It is a super-2 number, since 2×25489873² = 1299467251112258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25489879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240418 + ... + 240523.

It is an arithmetic number, because the mean of its divisors is an integer number (6492717).

Almost surely, 2^25489873 is an apocalyptic number.

It is an amenable number.

25489873 is a deficient number, since it is larger than the sum of its proper divisors (480995).

25489873 is an equidigital number, since it uses as much as digits as its factorization.

25489873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480994.

The product of its digits is 483840, while the sum is 46.

The square root of 25489873 is about 5048.7496471899. The cubic root of 25489873 is about 294.2992964547.

It can be divided in two parts, 25489 and 873, that added together give a palindrome (26362).

The spelling of 25489873 in words is "twenty-five million, four hundred eighty-nine thousand, eight hundred seventy-three".