25152516 has 36 divisors (see below), whose sum is σ = 65134524. Its totient is φ = 8179200.

The previous prime is 25152511. The next prime is 25152521. The reversal of 25152516 is 61525152.

It is an interprime number because it is at equal distance from previous prime (25152511) and next prime (25152521).

It can be written as a sum of positive squares in 2 ways, for example, as 11492100 + 13660416 = 3390^2 + 3696^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×25152516² = 1265298122260512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25152516.

It is not an unprimeable number, because it can be changed into a prime (25152511) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 7045 + ... + 9996.

Almost surely, 2^25152516 is an apocalyptic number.

It is an amenable number.

25152516 is an abundant number, since it is smaller than the sum of its proper divisors (39982008).

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

25152516 is a wasteful number, since it uses less digits than its factorization.

25152516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17092 (or 17087 counting only the distinct ones).

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

The square root of 25152516 is about 5015.2284095542. The cubic root of 25152516 is about 292.9951813828.

Adding to 25152516 its reverse (61525152), we get a palindrome (86677668).

The spelling of 25152516 in words is "twenty-five million, one hundred fifty-two thousand, five hundred sixteen".