551225425 has 12 divisors (see below), whose sum is σ = 723727116. Its totient is φ = 415040000.

The previous prime is 551225407. The next prime is 551225453. The reversal of 551225425 is 524522155.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2119936 + 549105489 = 1456^2 + 23433^2 .

It is not a de Polignac number, because 551225425 - 2⁵ = 551225393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 648076 + ... + 648925.

It is an arithmetic number, because the mean of its divisors is an integer number (60310593).

Almost surely, 2^551225425 is an apocalyptic number.

It is an amenable number.

551225425 is a deficient number, since it is larger than the sum of its proper divisors (172501691).

551225425 is a wasteful number, since it uses less digits than its factorization.

551225425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297028 (or 1297023 counting only the distinct ones).

The product of its digits is 20000, while the sum is 31.

The square root of 551225425 is about 23478.1904115287. The cubic root of 551225425 is about 819.9293142519.

The spelling of 551225425 in words is "five hundred fifty-one million, two hundred twenty-five thousand, four hundred twenty-five".