25749135 has 48 divisors (see below), whose sum is σ = 47882016. Its totient is φ = 12754944.

The previous prime is 25749109. The next prime is 25749209. The reversal of 25749135 is 53194752.

It is not a de Polignac number, because 25749135 - 2¹⁰ = 25748111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25749135.

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 47 ways as a sum of consecutive naturals, for example, 74032 + ... + 74378.

It is an arithmetic number, because the mean of its divisors is an integer number (997542).

Almost surely, 2^25749135 is an apocalyptic number.

25749135 is a deficient number, since it is larger than the sum of its proper divisors (22132881).

25749135 is a wasteful number, since it uses less digits than its factorization.

25749135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 469 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 25749135 is about 5074.3605508478. The cubic root of 25749135 is about 295.2937225820.

The spelling of 25749135 in words is "twenty-five million, seven hundred forty-nine thousand, one hundred thirty-five".