25143135 has 16 divisors (see below), whose sum is σ = 40377984. Its totient is φ = 13360032.

The previous prime is 25143133. The next prime is 25143197. The reversal of 25143135 is 53134152.

It is not a de Polignac number, because 25143135 - 2¹ = 25143133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25143133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1284 + ... + 7206.

It is an arithmetic number, because the mean of its divisors is an integer number (2523624).

Almost surely, 2^25143135 is an apocalyptic number.

25143135 is a deficient number, since it is larger than the sum of its proper divisors (15234849).

25143135 is a wasteful number, since it uses less digits than its factorization.

25143135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6214.

The product of its digits is 1800, while the sum is 24.

The square root of 25143135 is about 5014.2930708127. The cubic root of 25143135 is about 292.9587512356.

Adding to 25143135 its reverse (53134152), we get a palindrome (78277287).

The spelling of 25143135 in words is "twenty-five million, one hundred forty-three thousand, one hundred thirty-five".