3859515625 has 63 divisors (see below), whose sum is σ = 5692134171. Its totient is φ = 2609250000.

The previous prime is 3859515617. The next prime is 3859515629. The reversal of 3859515625 is 5265159583.

The square root of 3859515625 is 62125.

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

It can be written as a sum of positive squares in 3 ways, for example, as 3381306201 + 478209424 = 58149^2 + 21868^2 .

It is not a de Polignac number, because 3859515625 - 2³ = 3859515617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3859515629) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 54359340 + ... + 54359410.

Almost surely, 2^3859515625 is an apocalyptic number.

3859515625 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3859515625 is the 62125-th square number.

3859515625 is the 31063-rd centered octagonal number.

It is an amenable number.

3859515625 is a deficient number, since it is larger than the sum of its proper divisors (1832618546).

3859515625 is an frugal number, since it uses more digits than its factorization.

3859515625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 83 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 49.

The cubic root of 3859515625 is about 1568.5953906559.

Multiplying 3859515625 by its sum of digits (49), we get a square (189116265625 = 434875²).

3859515625 divided by its sum of digits (49) gives a square (78765625 = 8875²).

The spelling of 3859515625 in words is "three billion, eight hundred fifty-nine million, five hundred fifteen thousand, six hundred twenty-five".