75780825 has 12 divisors (see below), whose sum is σ = 125291088. Its totient is φ = 40416400.

The previous prime is 75780823. The next prime is 75780827. The reversal of 75780825 is 52808757.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (75780823) and next prime (75780827).

It is not a de Polignac number, because 75780825 - 2¹ = 75780823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75780821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 505131 + ... + 505280.

It is an arithmetic number, because the mean of its divisors is an integer number (10440924).

Almost surely, 2^75780825 is an apocalyptic number.

75780825 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

75780825 is a deficient number, since it is larger than the sum of its proper divisors (49510263).

75780825 is a wasteful number, since it uses less digits than its factorization.

75780825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010424 (or 1010419 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 75780825 is about 8705.2182626285. The cubic root of 75780825 is about 423.1747792505.

The spelling of 75780825 in words is "seventy-five million, seven hundred eighty thousand, eight hundred twenty-five".