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25125 = 35367

25125 has 16 divisors (see below), whose sum is σ = 42432. Its totient is φ = 13200.

The previous prime is 25121. The next prime is 25127. The reversal of 25125 is 52152.

Adding to 25125 its reverse (52152), we get a palindrome (77277).

It can be divided in two parts, 251 and 25, that added together give a triangular number (276 = T23).

25125 is nontrivially palindromic in base 11 and base 14.

It is not a de Polignac number, because 25125 - 22 = 25121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342 + ... + 408.

It is an arithmetic number, because the mean of its divisors is an integer number (2652).

225125 is an apocalyptic number.

25125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25125 is a deficient number, since it is larger than the sum of its proper divisors (17307).

25125 is an equidigital number, since it uses as much as digits as its factorization.

25125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 75 counting only the distinct ones).

The product of its digits is 100, while the sum is 15.

The square root of 25125 is about 158.5086748415. The cubic root of 25125 is about 29.2888300133.

The spelling of 25125 in words is "twenty-five thousand, one hundred twenty-five".