226225251 has 16 divisors (see below), whose sum is σ = 383027200. Its totient is φ = 129271464.

The previous prime is 226225247. The next prime is 226225261. The reversal of 226225251 is 152522622.

It is not a de Polignac number, because 226225251 - 2² = 226225247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226225261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 598291 + ... + 598668.

It is an arithmetic number, because the mean of its divisors is an integer number (23939200).

Almost surely, 2^226225251 is an apocalyptic number.

226225251 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

226225251 is a deficient number, since it is larger than the sum of its proper divisors (156801949).

226225251 is a wasteful number, since it uses less digits than its factorization.

226225251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196975 (or 1196969 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 226225251 is about 15040.7862493953. The cubic root of 226225251 is about 609.3222347685.

Adding to 226225251 its reverse (152522622), we get a palindrome (378747873).

The spelling of 226225251 in words is "two hundred twenty-six million, two hundred twenty-five thousand, two hundred fifty-one".