3871508788225 has 27 divisors (see below), whose sum is σ = 5198531343849. Its totient is φ = 2858865890400.

The previous prime is 3871508788201. The next prime is 3871508788237. The reversal of 3871508788225 is 5228878051783.

The square root of 3871508788225 is 1967615.

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

It can be written as a sum of positive squares in 4 ways, for example, as 997887117249 + 2873621670976 = 998943^2 + 1695176^2 .

It is not a de Polignac number, because 3871508788225 - 2¹⁷ = 3871508657153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 127879840 + ... + 127910110.

Almost surely, 2^{3871508788225} is an apocalyptic number.

3871508788225 is the 1967615-th square number.

3871508788225 is the 983808-th centered octagonal number.

It is an amenable number.

3871508788225 is a deficient number, since it is larger than the sum of its proper divisors (1327022555624).

3871508788225 is an frugal number, since it uses more digits than its factorization.

3871508788225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60578 (or 30289 counting only the distinct ones).

The product of its (nonzero) digits is 60211200, while the sum is 64.

Multiplying 3871508788225 by its sum of digits (64), we get a square (247776562446400 = 15740920²).

The spelling of 3871508788225 in words is "three trillion, eight hundred seventy-one billion, five hundred eight million, seven hundred eighty-eight thousand, two hundred twenty-five".