787428625 has 8 divisors (see below), whose sum is σ = 982711080. Its totient is φ = 629942800.

The previous prime is 787428617. The next prime is 787428659. The reversal of 787428625 is 526824787.

It can be written as a sum of positive squares in 4 ways, for example, as 57942544 + 729486081 = 7612^2 + 27009^2 .

It is not a de Polignac number, because 787428625 - 2³ = 787428617 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3149590 + ... + 3149839.

It is an arithmetic number, because the mean of its divisors is an integer number (122838885).

Almost surely, 2^787428625 is an apocalyptic number.

It is an amenable number.

787428625 is a deficient number, since it is larger than the sum of its proper divisors (195282455).

787428625 is an equidigital number, since it uses as much as digits as its factorization.

787428625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6299444 (or 6299434 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 49.

The square root of 787428625 is about 28061.1586539116. The cubic root of 787428625 is about 923.4294752190.

The spelling of 787428625 in words is "seven hundred eighty-seven million, four hundred twenty-eight thousand, six hundred twenty-five".