25715135 has 16 divisors (see below), whose sum is σ = 33141312. Its totient is φ = 19084800.

The previous prime is 25715119. The next prime is 25715147. The reversal of 25715135 is 53151752.

It is a happy number.

It is not a de Polignac number, because 25715135 - 2⁴ = 25715119 is a prime.

It is a super-2 number, since 2×25715135² = 1322536336136450, 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 = 25715098 and 25715107.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3905 + ... + 8165.

It is an arithmetic number, because the mean of its divisors is an integer number (2071332).

Almost surely, 2^25715135 is an apocalyptic number.

25715135 is a deficient number, since it is larger than the sum of its proper divisors (7426177).

25715135 is a wasteful number, since it uses less digits than its factorization.

25715135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4354.

The product of its digits is 5250, while the sum is 29.

The square root of 25715135 is about 5071.0092683804. The cubic root of 25715135 is about 295.1636935039.

Adding to 25715135 its reverse (53151752), we get a palindrome (78866887).

The spelling of 25715135 in words is "twenty-five million, seven hundred fifteen thousand, one hundred thirty-five".