25399472 has 40 divisors (see below), whose sum is σ = 56535072. Its totient is φ = 10828800.

The previous prime is 25399471. The next prime is 25399483. The reversal of 25399472 is 27499352.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (25399471) 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, 26522 + ... + 27462.

Almost surely, 2^25399472 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 25399472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28267536).

25399472 is an abundant number, since it is smaller than the sum of its proper divisors (31135600).

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

25399472 is a wasteful number, since it uses less digits than its factorization.

25399472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197 (or 1191 counting only the distinct ones).

The product of its digits is 136080, while the sum is 41.

The square root of 25399472 is about 5039.7888844673. The cubic root of 25399472 is about 293.9509690397.

The spelling of 25399472 in words is "twenty-five million, three hundred ninety-nine thousand, four hundred seventy-two".