25989552 has 40 divisors (see below), whose sum is σ = 74600880. Its totient is φ = 8663040.

The previous prime is 25989529. The next prime is 25989553. The reversal of 25989552 is 25598952.

25989552 is a `hidden beast` number, since 2 + 5 + 98 + 9 + 552 = 666.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 25989498 and 25989507.

It is not an unprimeable number, because it can be changed into a prime (25989553) 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, 29649 + ... + 30512.

It is an arithmetic number, because the mean of its divisors is an integer number (1865022).

Almost surely, 2^25989552 is an apocalyptic number.

It is an amenable number.

25989552 is an abundant number, since it is smaller than the sum of its proper divisors (48611328).

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

25989552 is a wasteful number, since it uses less digits than its factorization.

25989552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60178 (or 60166 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The square root of 25989552 is about 5097.9948999582. The cubic root of 25989552 is about 296.2099192691.

The spelling of 25989552 in words is "twenty-five million, nine hundred eighty-nine thousand, five hundred fifty-two".