25125516 has 72 divisors (see below), whose sum is σ = 70294224. Its totient is φ = 7516800.

The previous prime is 25125491. The next prime is 25125523. The reversal of 25125516 is 61552152.

25125516 is a `hidden beast` number, since 25 + 125 + 516 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 25125516.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16591 + ... + 18041.

Almost surely, 2^25125516 is an apocalyptic number.

25125516 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25125516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35147112).

25125516 is an abundant number, since it is smaller than the sum of its proper divisors (45168708).

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

25125516 is a wasteful number, since it uses less digits than its factorization.

25125516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511 (or 1506 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 25125516 is about 5012.5358851583. The cubic root of 25125516 is about 292.8903051651.

Adding to 25125516 its reverse (61552152), we get a palindrome (86677668).

The spelling of 25125516 in words is "twenty-five million, one hundred twenty-five thousand, five hundred sixteen".