551206125225 has 96 divisors (see below), whose sum is σ = 1157497344000. Its totient is φ = 251924178240.

The previous prime is 551206125221. The next prime is 551206125229. The reversal of 551206125225 is 522521602155.

551206125225 is a `hidden beast` number, since 5 + 5 + 12 + 0 + 612 + 5 + 2 + 25 = 666.

551206125225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (551206125221) and next prime (551206125229).

It is not a de Polignac number, because 551206125225 - 2² = 551206125221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551206125225.

It is not an unprimeable number, because it can be changed into a prime (551206125221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27579286 + ... + 27599264.

It is an arithmetic number, because the mean of its divisors is an integer number (12057264000).

Almost surely, 2^551206125225 is an apocalyptic number.

It is an amenable number.

551206125225 is an abundant number, since it is smaller than the sum of its proper divisors (606291218775).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551206125225 is a wasteful number, since it uses less digits than its factorization.

551206125225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25844 (or 25833 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 551206125225 in words is "five hundred fifty-one billion, two hundred six million, one hundred twenty-five thousand, two hundred twenty-five".