3891050625 has 80 divisors (see below), whose sum is σ = 8083012608. Its totient is φ = 1617000000.

The previous prime is 3891050621. The next prime is 3891050629. The reversal of 3891050625 is 5260501983.

It is an interprime number because it is at equal distance from previous prime (3891050621) and next prime (3891050629).

It is not a de Polignac number, because 3891050625 - 2² = 3891050621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3891050621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 130900 + ... + 157850.

Almost surely, 2^3891050625 is an apocalyptic number.

3891050625 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3891050625 is an abundant number, since it is smaller than the sum of its proper divisors (4191961983).

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

3891050625 is a wasteful number, since it uses less digits than its factorization.

3891050625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26992 (or 26977 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 3891050625 is about 62378.2864865652. The cubic root of 3891050625 is about 1572.8559892581.

The spelling of 3891050625 in words is "three billion, eight hundred ninety-one million, fifty thousand, six hundred twenty-five".