25443552 has 24 divisors (see below), whose sum is σ = 66789576. Its totient is φ = 8481152.

The previous prime is 25443499. The next prime is 25443553. The reversal of 25443552 is 25534452.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25443553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132423 + ... + 132614.

It is an arithmetic number, because the mean of its divisors is an integer number (2782899).

Almost surely, 2^25443552 is an apocalyptic number.

It is an amenable number.

25443552 is an abundant number, since it is smaller than the sum of its proper divisors (41346024).

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

25443552 is a wasteful number, since it uses less digits than its factorization.

25443552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265050 (or 265042 counting only the distinct ones).

The product of its digits is 24000, while the sum is 30.

The square root of 25443552 is about 5044.1601877815. The cubic root of 25443552 is about 294.1209183762.

The spelling of 25443552 in words is "twenty-five million, four hundred forty-three thousand, five hundred fifty-two".