120225251 has 4 divisors (see below), whose sum is σ = 121673832. Its totient is φ = 118776672.

The previous prime is 120225227. The next prime is 120225257. The reversal of 120225251 is 152522021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120225251 - 2⁶ = 120225187 is a prime.

It is a super-2 number, since 2×120225251² = 28908221956026002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120225257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 724166 + ... + 724331.

It is an arithmetic number, because the mean of its divisors is an integer number (30418458).

Almost surely, 2^120225251 is an apocalyptic number.

120225251 is a deficient number, since it is larger than the sum of its proper divisors (1448581).

120225251 is an equidigital number, since it uses as much as digits as its factorization.

120225251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448580.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 120225251 is about 10964.7275843953. The cubic root of 120225251 is about 493.5508423731.

Adding to 120225251 its reverse (152522021), we get a palindrome (272747272).

The spelling of 120225251 in words is "one hundred twenty million, two hundred twenty-five thousand, two hundred fifty-one".