25138125 has 60 divisors (see below), whose sum is σ = 46906860. Its totient is φ = 12960000.

The previous prime is 25138079. The next prime is 25138129. The reversal of 25138125 is 52183152.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 22638564 + 2499561 = 4758^2 + 1581^2 .

It is not a de Polignac number, because 25138125 - 2⁹ = 25137613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25138129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 230571 + ... + 230679.

It is an arithmetic number, because the mean of its divisors is an integer number (781781).

Almost surely, 2^25138125 is an apocalyptic number.

25138125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25138125 is a deficient number, since it is larger than the sum of its proper divisors (21768735).

25138125 is a wasteful number, since it uses less digits than its factorization.

25138125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 158 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 25138125 is about 5013.7934740075. The cubic root of 25138125 is about 292.9392917047.

The spelling of 25138125 in words is "twenty-five million, one hundred thirty-eight thousand, one hundred twenty-five".