25706534 has 16 divisors (see below), whose sum is σ = 44498688. Its totient is φ = 10909512.

The previous prime is 25706531. The next prime is 25706579. The reversal of 25706534 is 43560752.

It is a self number, because there is not a number n which added to its sum of digits gives 25706534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25706531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7472 + ... + 10355.

It is an arithmetic number, because the mean of its divisors is an integer number (2781168).

Almost surely, 2^25706534 is an apocalyptic number.

25706534 is a deficient number, since it is larger than the sum of its proper divisors (18792154).

25706534 is a wasteful number, since it uses less digits than its factorization.

25706534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17939.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 25706534 is about 5070.1611414234. The cubic root of 25706534 is about 295.1307818092.

The spelling of 25706534 in words is "twenty-five million, seven hundred six thousand, five hundred thirty-four".