25122135 has 16 divisors (see below), whose sum is σ = 41176800. Its totient is φ = 13071360.

The previous prime is 25122133. The next prime is 25122137. The reversal of 25122135 is 53122152.

It is an interprime number because it is at equal distance from previous prime (25122133) and next prime (25122137).

It is not a de Polignac number, because 25122135 - 2¹ = 25122133 is a prime.

It is a super-2 number, since 2×25122135² = 1262243333916450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25122131) 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 15 ways as a sum of consecutive naturals, for example, 19810 + ... + 21039.

It is an arithmetic number, because the mean of its divisors is an integer number (2573550).

Almost surely, 2^25122135 is an apocalyptic number.

25122135 is a deficient number, since it is larger than the sum of its proper divisors (16054665).

25122135 is a wasteful number, since it uses less digits than its factorization.

25122135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40898.

The product of its digits is 600, while the sum is 21.

The square root of 25122135 is about 5012.1986193686. The cubic root of 25122135 is about 292.8771670396.

Adding to 25122135 its reverse (53122152), we get a palindrome (78244287).

The spelling of 25122135 in words is "twenty-five million, one hundred twenty-two thousand, one hundred thirty-five".