113425521 has 24 divisors (see below), whose sum is σ = 167196960. Its totient is φ = 68344320.

The previous prime is 113425517. The next prime is 113425537. The reversal of 113425521 is 125524311.

It is a happy number.

It is not a de Polignac number, because 113425521 - 2² = 113425517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113425491 and 113425500.

It is not an unprimeable number, because it can be changed into a prime (113425511) 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, 69250 + ... + 70868.

It is an arithmetic number, because the mean of its divisors is an integer number (6966540).

Almost surely, 2^113425521 is an apocalyptic number.

113425521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113425521 is a deficient number, since it is larger than the sum of its proper divisors (53771439).

113425521 is a wasteful number, since it uses less digits than its factorization.

113425521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837 (or 1826 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 113425521 is about 10650.1418300415. The cubic root of 113425521 is about 484.0649017650.

Adding to 113425521 its reverse (125524311), we get a palindrome (238949832).

The spelling of 113425521 in words is "one hundred thirteen million, four hundred twenty-five thousand, five hundred twenty-one".