25715125 has 8 divisors (see below), whose sum is σ = 32092632. Its totient is φ = 20572000.

The previous prime is 25715119. The next prime is 25715147. The reversal of 25715125 is 52151752.

It can be written as a sum of positive squares in 4 ways, for example, as 253009 + 25462116 = 503^2 + 5046^2 .

It is not a de Polignac number, because 25715125 - 2⁹ = 25714613 is a prime.

It is a super-2 number, since 2×25715125² = 1322535307531250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25715093 and 25715102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102736 + ... + 102985.

It is an arithmetic number, because the mean of its divisors is an integer number (4011579).

Almost surely, 2^25715125 is an apocalyptic number.

25715125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25715125 is a deficient number, since it is larger than the sum of its proper divisors (6377507).

25715125 is an equidigital number, since it uses as much as digits as its factorization.

25715125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205736 (or 205726 counting only the distinct ones).

The product of its digits is 3500, while the sum is 28.

The square root of 25715125 is about 5071.0082823833. The cubic root of 25715125 is about 295.1636552432.

Adding to 25715125 its reverse (52151752), we get a palindrome (77866877).

The spelling of 25715125 in words is "twenty-five million, seven hundred fifteen thousand, one hundred twenty-five".