25122825 has 96 divisors (see below), whose sum is σ = 56940800. Its totient is φ = 10575360.

The previous prime is 25122817. The next prime is 25122827. The reversal of 25122825 is 52822152.

It is not a de Polignac number, because 25122825 - 2³ = 25122817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25122827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 61221 + ... + 61629.

Almost surely, 2^25122825 is an apocalyptic number.

25122825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25122825 is an abundant number, since it is smaller than the sum of its proper divisors (31817975).

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

25122825 is a wasteful number, since it uses less digits than its factorization.

25122825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 437 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 25122825 is about 5012.2674509647. The cubic root of 25122825 is about 292.8798483855.

Adding to 25122825 its reverse (52822152), we get a palindrome (77944977).

The spelling of 25122825 in words is "twenty-five million, one hundred twenty-two thousand, eight hundred twenty-five".