225515377 has 2 divisors, whose sum is σ = 225515378. Its totient is φ = 225515376.

The previous prime is 225515369. The next prime is 225515429. The reversal of 225515377 is 773515522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123121216 + 102394161 = 11096^2 + 10119^2 .

It is a cyclic number.

It is not a de Polignac number, because 225515377 - 2³ = 225515369 is a prime.

It is not a weakly prime, because it can be changed into another prime (225515327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112757688 + 112757689.

It is an arithmetic number, because the mean of its divisors is an integer number (112757689).

Almost surely, 2^225515377 is an apocalyptic number.

It is an amenable number.

225515377 is a deficient number, since it is larger than the sum of its proper divisors (1).

225515377 is an equidigital number, since it uses as much as digits as its factorization.

225515377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73500, while the sum is 37.

The square root of 225515377 is about 15017.1694070487. The cubic root of 225515377 is about 608.6842346246.

The spelling of 225515377 in words is "two hundred twenty-five million, five hundred fifteen thousand, three hundred seventy-seven".