25116534 has 32 divisors (see below), whose sum is σ = 56609280. Its totient is φ = 8253000.

The previous prime is 25116521. The next prime is 25116569. The reversal of 25116534 is 43561152.

25116534 is a `hidden beast` number, since 2 + 5 + 1 + 1 + 653 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25116498 and 25116507.

It is a congruent number.

It is an unprimeable number.

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, 559 + ... + 7109.

It is an arithmetic number, because the mean of its divisors is an integer number (1769040).

Almost surely, 2^25116534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25116534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28304640).

25116534 is an abundant number, since it is smaller than the sum of its proper divisors (31492746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25116534 is a wasteful number, since it uses less digits than its factorization.

25116534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6633 (or 6627 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 25116534 is about 5011.6398513860. The cubic root of 25116534 is about 292.8553996893.

Adding to 25116534 its reverse (43561152), we get a palindrome (68677686).

It can be divided in two parts, 2511 and 6534, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 25116534 in words is "twenty-five million, one hundred sixteen thousand, five hundred thirty-four".