25628825 has 6 divisors (see below), whose sum is σ = 31779774. Its totient is φ = 20503040.

The previous prime is 25628807. The next prime is 25628849. The reversal of 25628825 is 52882652.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 35344 + 25593481 = 188^2 + 5059^2 .

It is not a de Polignac number, because 25628825 - 2⁶ = 25628761 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 512552 + ... + 512601.

It is an arithmetic number, because the mean of its divisors is an integer number (5296629).

Almost surely, 2^25628825 is an apocalyptic number.

25628825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25628825 is a deficient number, since it is larger than the sum of its proper divisors (6150949).

25628825 is a wasteful number, since it uses less digits than its factorization.

25628825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025163 (or 1025158 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 25628825 is about 5062.4919753023. The cubic root of 25628825 is about 294.8330952831.

The spelling of 25628825 in words is "twenty-five million, six hundred twenty-eight thousand, eight hundred twenty-five".