3825651870 has 320 divisors, whose sum is σ = 11372296320. Its totient is φ = 919683072.

The previous prime is 3825651857. The next prime is 3825651871. The reversal of 3825651870 is 781565283.

3825651870 is a `hidden beast` number, since 3 + 8 + 2 + 565 + 1 + 87 + 0 = 666.

It is a super-2 number, since 2×3825651870² = 29271224460868993800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3825651871) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 39439662 + ... + 39439758.

It is an arithmetic number, because the mean of its divisors is an integer number (35538426).

Almost surely, 2^3825651870 is an apocalyptic number.

3825651870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3825651870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5686148160).

3825651870 is an abundant number, since it is smaller than the sum of its proper divisors (7546644450).

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

3825651870 is a wasteful number, since it uses less digits than its factorization.

3825651870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 3825651870 is about 61851.8542163450. The cubic root of 3825651870 is about 1563.9942392346.

The spelling of 3825651870 in words is "three billion, eight hundred twenty-five million, six hundred fifty-one thousand, eight hundred seventy".