25489872 has 30 divisors (see below), whose sum is σ = 71336642. Its totient is φ = 8496576.

The previous prime is 25489813. The next prime is 25489879. The reversal of 25489872 is 27898452.

It can be written as a sum of positive squares in only one way, i.e., 12787776 + 12702096 = 3576^2 + 3564^2 .

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25489879) 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 5 ways as a sum of consecutive naturals, for example, 88363 + ... + 88650.

Almost surely, 2^25489872 is an apocalyptic number.

It is an amenable number.

25489872 is an abundant number, since it is smaller than the sum of its proper divisors (45846770).

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

25489872 is a wasteful number, since it uses less digits than its factorization.

25489872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177027 (or 177018 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 25489872 is about 5048.7495481555. The cubic root of 25489872 is about 294.2992926061.

It can be divided in two parts, 254898 and 72, that multiplied together give a square (18352656 = 4284²).

The spelling of 25489872 in words is "twenty-five million, four hundred eighty-nine thousand, eight hundred seventy-two".