3919423725 has 72 divisors (see below), whose sum is σ = 8035110720. Its totient is φ = 1789032960.

The previous prime is 3919423709. The next prime is 3919423733. The reversal of 3919423725 is 5273249193.

3919423725 is a `hidden beast` number, since 391 + 9 + 4 + 237 + 25 = 666.

It is not a de Polignac number, because 3919423725 - 2⁴ = 3919423709 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1351477 + ... + 1354373.

It is an arithmetic number, because the mean of its divisors is an integer number (111598760).

Almost surely, 2^3919423725 is an apocalyptic number.

3919423725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3919423725 is an abundant number, since it is smaller than the sum of its proper divisors (4115686995).

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

3919423725 is a wasteful number, since it uses less digits than its factorization.

3919423725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3779 (or 3771 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 3919423725 is about 62605.3010934378. The cubic root of 3919423725 is about 1576.6697635372.

The spelling of 3919423725 in words is "three billion, nine hundred nineteen million, four hundred twenty-three thousand, seven hundred twenty-five".