228374073225 has 27 divisors (see below), whose sum is σ = 409056179623. Its totient is φ = 121795682640.

The previous prime is 228374073203. The next prime is 228374073281. The reversal of 228374073225 is 522370473822.

The square root of 228374073225 is 477885.

It is a perfect power (a square), and thus also a powerful number.

228374073225 is a `hidden beast` number, since 2 + 283 + 7 + 40 + 7 + 322 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 82214666361 + 146159406864 = 286731^2 + 382308^2 .

It is not a de Polignac number, because 228374073225 - 2⁷ = 228374073097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7152346 + ... + 7184204.

Almost surely, 2^228374073225 is an apocalyptic number.

228374073225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

228374073225 is the 477885-th square number.

228374073225 is the 238943-rd centered octagonal number.

It is an amenable number.

228374073225 is a deficient number, since it is larger than the sum of its proper divisors (180682106398).

228374073225 is an frugal number, since it uses more digits than its factorization.

228374073225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63734 (or 31867 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 45.

The spelling of 228374073225 in words is "two hundred twenty-eight billion, three hundred seventy-four million, seventy-three thousand, two hundred twenty-five".