551146625 has 16 divisors (see below), whose sum is σ = 688488528. Its totient is φ = 440496000.

The previous prime is 551146601. The next prime is 551146637. The reversal of 551146625 is 526641155.

It can be written as a sum of positive squares in 8 ways, for example, as 109474369 + 441672256 = 10463^2 + 21016^2 .

It is not a de Polignac number, because 551146625 - 2¹⁰ = 551145601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240485 + ... + 242765.

It is an arithmetic number, because the mean of its divisors is an integer number (43030533).

Almost surely, 2^551146625 is an apocalyptic number.

It is an amenable number.

551146625 is a deficient number, since it is larger than the sum of its proper divisors (137341903).

551146625 is a wasteful number, since it uses less digits than its factorization.

551146625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4229 (or 4219 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

The square root of 551146625 is about 23476.5121983654. The cubic root of 551146625 is about 819.8902416052.

The spelling of 551146625 in words is "five hundred fifty-one million, one hundred forty-six thousand, six hundred twenty-five".