228825451 has 2 divisors, whose sum is σ = 228825452. Its totient is φ = 228825450.

The previous prime is 228825397. The next prime is 228825479. The reversal of 228825451 is 154528822.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 228825451 - 2²⁵ = 195271019 is a prime.

It is a super-2 number, since 2×228825451² = 104722174050706802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 228825451.

It is not a weakly prime, because it can be changed into another prime (228825481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114412725 + 114412726.

It is an arithmetic number, because the mean of its divisors is an integer number (114412726).

Almost surely, 2^228825451 is an apocalyptic number.

228825451 is a deficient number, since it is larger than the sum of its proper divisors (1).

228825451 is an equidigital number, since it uses as much as digits as its factorization.

228825451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51200, while the sum is 37.

The square root of 228825451 is about 15126.9775897236. The cubic root of 228825451 is about 611.6478342925.

The spelling of 228825451 in words is "two hundred twenty-eight million, eight hundred twenty-five thousand, four hundred fifty-one".