25489212 has 72 divisors (see below), whose sum is σ = 70326144. Its totient is φ = 7162848.

The previous prime is 25489201. The next prime is 25489291. The reversal of 25489212 is 21298452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39073 + ... + 39719.

It is an arithmetic number, because the mean of its divisors is an integer number (976752).

Almost surely, 2^25489212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25489212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35163072).

25489212 is an abundant number, since it is smaller than the sum of its proper divisors (44836932).

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

25489212 is a wasteful number, since it uses less digits than its factorization.

25489212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 726 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 25489212 is about 5048.6841850130. The cubic root of 25489212 is about 294.2967525226.

The spelling of 25489212 in words is "twenty-five million, four hundred eighty-nine thousand, two hundred twelve".