25697448 has 96 divisors (see below), whose sum is σ = 80832960. Its totient is φ = 7223040.

The previous prime is 25697437. The next prime is 25697453. The reversal of 25697448 is 84479652.

It is a happy number.

Its product of digits (483840) is a multiple of the sum of its prime divisors (840).

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, 33388 + ... + 34148.

It is an arithmetic number, because the mean of its divisors is an integer number (842010).

Almost surely, 2^25697448 is an apocalyptic number.

25697448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25697448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40416480).

25697448 is an abundant number, since it is smaller than the sum of its proper divisors (55135512).

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

25697448 is a wasteful number, since it uses less digits than its factorization.

25697448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 840 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 25697448 is about 5069.2650354859. The cubic root of 25697448 is about 295.0960062889.

The spelling of 25697448 in words is "twenty-five million, six hundred ninety-seven thousand, four hundred forty-eight".