25403125 has 24 divisors (see below), whose sum is σ = 34685280. Its totient is φ = 18450000.

The previous prime is 25403113. The next prime is 25403129. The reversal of 25403125 is 52130452.

It is not a de Polignac number, because 25403125 - 2⁵ = 25403093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25403096 and 25403105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25403129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34006 + ... + 34744.

It is an arithmetic number, because the mean of its divisors is an integer number (1445220).

Almost surely, 2^25403125 is an apocalyptic number.

25403125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25403125 is a deficient number, since it is larger than the sum of its proper divisors (9282155).

25403125 is an frugal number, since it uses more digits than its factorization.

25403125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25403125 is about 5040.1512874119. The cubic root of 25403125 is about 293.9650605586.

Adding to 25403125 its reverse (52130452), we get a palindrome (77533577).

It can be divided in two parts, 2540 and 3125, that added together give a palindrome (5665).

The spelling of 25403125 in words is "twenty-five million, four hundred three thousand, one hundred twenty-five".