7828911625 has 8 divisors (see below), whose sum is σ = 9770481864. Its totient is φ = 6263129200.

The previous prime is 7828911617. The next prime is 7828911667. The reversal of 7828911625 is 5261198287.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 342509049 + 7486402576 = 18507^2 + 86524^2 .

It is not a de Polignac number, because 7828911625 - 2³ = 7828911617 is a prime.

It is a super-2 number, since 2×7828911625² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31315522 + ... + 31315771.

It is an arithmetic number, because the mean of its divisors is an integer number (1221310233).

Almost surely, 2^7828911625 is an apocalyptic number.

It is an amenable number.

7828911625 is a deficient number, since it is larger than the sum of its proper divisors (1941570239).

7828911625 is an equidigital number, since it uses as much as digits as its factorization.

7828911625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62631308 (or 62631298 counting only the distinct ones).

The product of its digits is 483840, while the sum is 49.

The square root of 7828911625 is about 88481.1371140765. The cubic root of 7828911625 is about 1985.6397741492.

The spelling of 7828911625 in words is "seven billion, eight hundred twenty-eight million, nine hundred eleven thousand, six hundred twenty-five".