25439532 has 24 divisors (see below), whose sum is σ = 59442096. Its totient is φ = 8467968.

The previous prime is 25439521. The next prime is 25439539. The reversal of 25439532 is 23593452.

It is a junction number, because it is equal to n+sod(n) for n = 25439493 and 25439502.

It is not an unprimeable number, because it can be changed into a prime (25439539) 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, 13428 + ... + 15204.

It is an arithmetic number, because the mean of its divisors is an integer number (2476754).

Almost surely, 2^25439532 is an apocalyptic number.

It is an amenable number.

25439532 is an abundant number, since it is smaller than the sum of its proper divisors (34002564).

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

25439532 is a wasteful number, since it uses less digits than its factorization.

25439532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977 (or 2975 counting only the distinct ones).

The product of its digits is 32400, while the sum is 33.

The square root of 25439532 is about 5043.7616914363. The cubic root of 25439532 is about 294.1054275049.

The spelling of 25439532 in words is "twenty-five million, four hundred thirty-nine thousand, five hundred thirty-two".