113521025 has 24 divisors (see below), whose sum is σ = 143740800. Its totient is φ = 88920000.

The previous prime is 113521021. The next prime is 113521073. The reversal of 113521025 is 520125311.

It is a happy number.

It is not a de Polignac number, because 113521025 - 2² = 113521021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113520988 and 113521006.

It is not an unprimeable number, because it can be changed into a prime (113521021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 452150 + ... + 452400.

It is an arithmetic number, because the mean of its divisors is an integer number (5989200).

Almost surely, 2^113521025 is an apocalyptic number.

It is an amenable number.

113521025 is a deficient number, since it is larger than the sum of its proper divisors (30219775).

113521025 is a wasteful number, since it uses less digits than its factorization.

113521025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 113521025 is about 10654.6245827809. The cubic root of 113521025 is about 484.2007241232.

Adding to 113521025 its reverse (520125311), we get a palindrome (633646336).

The spelling of 113521025 in words is "one hundred thirteen million, five hundred twenty-one thousand, twenty-five".