25784025 has 12 divisors (see below), whose sum is σ = 42629712. Its totient is φ = 13751440.

The previous prime is 25784021. The next prime is 25784041. The reversal of 25784025 is 52048752.

It is not a de Polignac number, because 25784025 - 2² = 25784021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25784021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171819 + ... + 171968.

It is an arithmetic number, because the mean of its divisors is an integer number (3552476).

Almost surely, 2^25784025 is an apocalyptic number.

25784025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25784025 is a deficient number, since it is larger than the sum of its proper divisors (16845687).

25784025 is a wasteful number, since it uses less digits than its factorization.

25784025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343800 (or 343795 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 25784025 is about 5077.7972586546. The cubic root of 25784025 is about 295.4270364203.

The spelling of 25784025 in words is "twenty-five million, seven hundred eighty-four thousand, twenty-five".