25563552 has 96 divisors (see below), whose sum is σ = 77616000. Its totient is φ = 7216128.

The previous prime is 25563521. The next prime is 25563553. The reversal of 25563552 is 25536552.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25563553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73074 + ... + 73422.

It is an arithmetic number, because the mean of its divisors is an integer number (808500).

Almost surely, 2^25563552 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 25563552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38808000).

25563552 is an abundant number, since it is smaller than the sum of its proper divisors (52052448).

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

25563552 is a wasteful number, since it uses less digits than its factorization.

25563552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 470 counting only the distinct ones).

The product of its digits is 45000, while the sum is 33.

The square root of 25563552 is about 5056.0411390731. The cubic root of 25563552 is about 294.5825830626.

Subtracting from 25563552 its reverse (25536552), we obtain a cube (27000 = 30³).

The spelling of 25563552 in words is "twenty-five million, five hundred sixty-three thousand, five hundred fifty-two".