25129135 has 8 divisors (see below), whose sum is σ = 30322656. Its totient is φ = 19991520.

The previous prime is 25129129. The next prime is 25129151. The reversal of 25129135 is 53192152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25129135 - 2⁷ = 25129007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12979 + ... + 14788.

It is an arithmetic number, because the mean of its divisors is an integer number (3790332).

Almost surely, 2^25129135 is an apocalyptic number.

25129135 is a deficient number, since it is larger than the sum of its proper divisors (5193521).

25129135 is a wasteful number, since it uses less digits than its factorization.

25129135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27953.

The product of its digits is 2700, while the sum is 28.

The square root of 25129135 is about 5012.8968670819. The cubic root of 25129135 is about 292.9043668216.

The spelling of 25129135 in words is "twenty-five million, one hundred twenty-nine thousand, one hundred thirty-five".