115121025 has 36 divisors (see below), whose sum is σ = 218330892. Its totient is φ = 57784320.

The previous prime is 115121021. The next prime is 115121029. The reversal of 115121025 is 520121511.

It is an interprime number because it is at equal distance from previous prime (115121021) and next prime (115121029).

It can be written as a sum of positive squares in 6 ways, for example, as 12362256 + 102758769 = 3516^2 + 10137^2 .

It is not a de Polignac number, because 115121025 - 2² = 115121021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115120989 and 115121007.

It is not an unprimeable number, because it can be changed into a prime (115121021) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11224 + ... + 18873.

It is an arithmetic number, because the mean of its divisors is an integer number (6064747).

Almost surely, 2^115121025 is an apocalyptic number.

115121025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115121025 is a deficient number, since it is larger than the sum of its proper divisors (103209867).

115121025 is a wasteful number, since it uses less digits than its factorization.

115121025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30130 (or 30122 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 115121025 is about 10729.4466306516. The cubic root of 115121025 is about 486.4649439722.

Adding to 115121025 its reverse (520121511), we get a palindrome (635242536).

The spelling of 115121025 in words is "one hundred fifteen million, one hundred twenty-one thousand, twenty-five".