113405021225 has 24 divisors (see below), whose sum is σ = 144858436800. Its totient is φ = 88019305920.

The previous prime is 113405021209. The next prime is 113405021237. The reversal of 113405021225 is 522120504311.

It is not a de Polignac number, because 113405021225 - 2⁴ = 113405021209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113405021194 and 113405021203.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193829 + ... + 514178.

It is an arithmetic number, because the mean of its divisors is an integer number (6035768200).

Almost surely, 2^113405021225 is an apocalyptic number.

It is an amenable number.

113405021225 is a deficient number, since it is larger than the sum of its proper divisors (31453415575).

113405021225 is a wasteful number, since it uses less digits than its factorization.

113405021225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708209 (or 708204 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 113405021225 its reverse (522120504311), we get a palindrome (635525525536).

The spelling of 113405021225 in words is "one hundred thirteen billion, four hundred five million, twenty-one thousand, two hundred twenty-five".