228471425 has 48 divisors (see below), whose sum is σ = 360810240. Its totient is φ = 139587840.

The previous prime is 228471421. The next prime is 228471437. The reversal of 228471425 is 524174822.

It is not a de Polignac number, because 228471425 - 2² = 228471421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228471421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64244 + ... + 67706.

It is an arithmetic number, because the mean of its divisors is an integer number (7516880).

Almost surely, 2^228471425 is an apocalyptic number.

228471425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228471425 is a deficient number, since it is larger than the sum of its proper divisors (132338815).

228471425 is a wasteful number, since it uses less digits than its factorization.

228471425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3522 (or 3517 counting only the distinct ones).

The product of its digits is 35840, while the sum is 35.

The square root of 228471425 is about 15115.2712512876. The cubic root of 228471425 is about 611.3322356505.

The spelling of 228471425 in words is "two hundred twenty-eight million, four hundred seventy-one thousand, four hundred twenty-five".