25545648 has 40 divisors (see below), whose sum is σ = 66646528. Its totient is φ = 8430912.

The previous prime is 25545647. The next prime is 25545649. The reversal of 25545648 is 84654552.

It is an interprime number because it is at equal distance from previous prime (25545647) and next prime (25545649).

It is not an unprimeable number, because it can be changed into a prime (25545647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2361 + ... + 7527.

Almost surely, 2^25545648 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 25545648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33323264).

25545648 is an abundant number, since it is smaller than the sum of its proper divisors (41100880).

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

25545648 is a wasteful number, since it uses less digits than its factorization.

25545648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5281 (or 5275 counting only the distinct ones).

The product of its digits is 192000, while the sum is 39.

The square root of 25545648 is about 5054.2702737388. The cubic root of 25545648 is about 294.5137945214.

The spelling of 25545648 in words is "twenty-five million, five hundred forty-five thousand, six hundred forty-eight".