2858506225 has 45 divisors (see below), whose sum is σ = 3870616197. Its totient is φ = 2094117120.

The previous prime is 2858506219. The next prime is 2858506229. The reversal of 2858506225 is 5226058582.

The square root of 2858506225 is 53465.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 22 ways, for example, as 1093161969 + 1765344256 = 33063^2 + 42016^2 .

It is not a de Polignac number, because 2858506225 - 2⁵ = 2858506193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2858506229) 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 44 ways as a sum of consecutive naturals, for example, 77256907 + ... + 77256943.

Almost surely, 2^2858506225 is an apocalyptic number.

2858506225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2858506225 is the 53465-th square number.

2858506225 is the 26733-rd centered octagonal number.

It is an amenable number.

2858506225 is a deficient number, since it is larger than the sum of its proper divisors (1012109972).

2858506225 is an frugal number, since it uses more digits than its factorization.

2858506225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 43.

The cubic root of 2858506225 is about 1419.2090789900.

The spelling of 2858506225 in words is "two billion, eight hundred fifty-eight million, five hundred six thousand, two hundred twenty-five".