115225020 has 36 divisors (see below), whose sum is σ = 349516440. Its totient is φ = 30726624.

The previous prime is 115225013. The next prime is 115225027. The reversal of 115225020 is 20522511.

It is an interprime number because it is at equal distance from previous prime (115225013) and next prime (115225027).

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

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 115224984 and 115225002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115225027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319890 + ... + 320249.

It is an arithmetic number, because the mean of its divisors is an integer number (9708790).

Almost surely, 2^115225020 is an apocalyptic number.

115225020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115225020 is an abundant number, since it is smaller than the sum of its proper divisors (234291420).

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

115225020 is a wasteful number, since it uses less digits than its factorization.

115225020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640154 (or 640149 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 115225020 is about 10734.2917791534. The cubic root of 115225020 is about 486.6113831825.

Adding to 115225020 its reverse (20522511), we get a palindrome (135747531).

The spelling of 115225020 in words is "one hundred fifteen million, two hundred twenty-five thousand, twenty".