222525551 has 2 divisors, whose sum is σ = 222525552. Its totient is φ = 222525550.

The previous prime is 222525547. The next prime is 222525599. The reversal of 222525551 is 155525222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222525551 - 2² = 222525547 is a prime.

It is a Chen prime.

It is equal to p_12253934 and since 222525551 and 12253934 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222525451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111262775 + 111262776.

It is an arithmetic number, because the mean of its divisors is an integer number (111262776).

Almost surely, 2^222525551 is an apocalyptic number.

222525551 is a deficient number, since it is larger than the sum of its proper divisors (1).

222525551 is an equidigital number, since it uses as much as digits as its factorization.

222525551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10000, while the sum is 29.

The square root of 222525551 is about 14917.2903370552. The cubic root of 222525551 is about 605.9823314639.

The spelling of 222525551 in words is "two hundred twenty-two million, five hundred twenty-five thousand, five hundred fifty-one".