25905072 has 40 divisors (see below), whose sum is σ = 67847344. Its totient is φ = 8515584.

The previous prime is 25905067. The next prime is 25905073. The reversal of 25905072 is 27050952.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25905073) 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, 193 + ... + 7200.

Almost surely, 2^25905072 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 25905072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33923672).

25905072 is an abundant number, since it is smaller than the sum of its proper divisors (41942272).

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

25905072 is a wasteful number, since it uses less digits than its factorization.

25905072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7477 (or 7471 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 25905072 is about 5089.7025453360. The cubic root of 25905072 is about 295.8886237903. Note that the first 3 decimals are identical.

The spelling of 25905072 in words is "twenty-five million, nine hundred five thousand, seventy-two".