111225450 has 48 divisors (see below), whose sum is σ = 315247680. Its totient is φ = 25422720.

The previous prime is 111225431. The next prime is 111225451. The reversal of 111225450 is 54522111.

It is a super-2 number, since 2×111225450² = 24742201455405000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111225451) 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, 51915 + ... + 54014.

It is an arithmetic number, because the mean of its divisors is an integer number (6567660).

Almost surely, 2^111225450 is an apocalyptic number.

111225450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111225450 is an abundant number, since it is smaller than the sum of its proper divisors (204022230).

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

111225450 is a wasteful number, since it uses less digits than its factorization.

111225450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105951 (or 105946 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 111225450 is about 10546.3477090413. The cubic root of 111225450 is about 480.9147054496.

Adding to 111225450 its reverse (54522111), we get a palindrome (165747561).

It can be divided in two parts, 1112 and 25450, that added together give a palindrome (26562).

The spelling of 111225450 in words is "one hundred eleven million, two hundred twenty-five thousand, four hundred fifty".