25120115 has 4 divisors (see below), whose sum is σ = 30144144. Its totient is φ = 20096088.

The previous prime is 25120111. The next prime is 25120141. The reversal of 25120115 is 51102152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25120115 - 2² = 25120111 is a prime.

It is a super-2 number, since 2×25120115² = 1262040355226450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25120093 and 25120102.

It is not an unprimeable number, because it can be changed into a prime (25120111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2512007 + ... + 2512016.

It is an arithmetic number, because the mean of its divisors is an integer number (7536036).

Almost surely, 2^25120115 is an apocalyptic number.

25120115 is a deficient number, since it is larger than the sum of its proper divisors (5024029).

25120115 is an equidigital number, since it uses as much as digits as its factorization.

25120115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024028.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 25120115 is about 5011.9971069425. The cubic root of 25120115 is about 292.8693170203.

Adding to 25120115 its reverse (51102152), we get a palindrome (76222267).

The spelling of 25120115 in words is "twenty-five million, one hundred twenty thousand, one hundred fifteen".