225425051 has 4 divisors (see below), whose sum is σ = 228789672. Its totient is φ = 222060432.

The previous prime is 225425041. The next prime is 225425069. The reversal of 225425051 is 150524522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150524522 = 2 ⋅75262261.

It is a cyclic number.

It is not a de Polignac number, because 225425051 - 2¹⁸ = 225162907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225425051.

It is not an unprimeable number, because it can be changed into a prime (225425021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1682210 + ... + 1682343.

It is an arithmetic number, because the mean of its divisors is an integer number (57197418).

Almost surely, 2^225425051 is an apocalyptic number.

225425051 is a deficient number, since it is larger than the sum of its proper divisors (3364621).

225425051 is an equidigital number, since it uses as much as digits as its factorization.

225425051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3364620.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 225425051 is about 15014.1616815592. The cubic root of 225425051 is about 608.6029580468.

Adding to 225425051 its reverse (150524522), we get a palindrome (375949573).

The spelling of 225425051 in words is "two hundred twenty-five million, four hundred twenty-five thousand, fifty-one".