3861747225 has 192 divisors, whose sum is σ = 8432793600. Its totient is φ = 1696101120.

The previous prime is 3861747223. The next prime is 3861747233. The reversal of 3861747225 is 5227471683.

3861747225 is a `hidden beast` number, since 3 + 8 + 617 + 4 + 7 + 2 + 25 = 666.

3861747225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3861747225 - 2¹ = 3861747223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (3861747223) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 16863411 + ... + 16863639.

It is an arithmetic number, because the mean of its divisors is an integer number (43920800).

Almost surely, 2^3861747225 is an apocalyptic number.

3861747225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3861747225 is an abundant number, since it is smaller than the sum of its proper divisors (4571046375).

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

3861747225 is a wasteful number, since it uses less digits than its factorization.

3861747225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 370 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 3861747225 is about 62142.9579678985. The cubic root of 3861747225 is about 1568.8976568263.

The spelling of 3861747225 in words is "three billion, eight hundred sixty-one million, seven hundred forty-seven thousand, two hundred twenty-five".