25280832 has 28 divisors (see below), whose sum is σ = 66889376. Its totient is φ = 8426880.

The previous prime is 25280809. The next prime is 25280839. The reversal of 25280832 is 23808252.

It is a super-2 number, since 2×25280832² = 1278240933224448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25280832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25280839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65644 + ... + 66027.

Almost surely, 2^25280832 is an apocalyptic number.

It is an amenable number.

25280832 is an abundant number, since it is smaller than the sum of its proper divisors (41608544).

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

25280832 is a wasteful number, since it uses less digits than its factorization.

25280832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131686 (or 131676 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 25280832 is about 5028.0047732674. The cubic root of 25280832 is about 293.4925765289.

The spelling of 25280832 in words is "twenty-five million, two hundred eighty thousand, eight hundred thirty-two".