70681825 has 12 divisors (see below), whose sum is σ = 87796588. Its totient is φ = 56448000.

The previous prime is 70681799. The next prime is 70681837. The reversal of 70681825 is 52818607.

It can be written as a sum of positive squares in 6 ways, for example, as 16394401 + 54287424 = 4049^2 + 7368^2 .

It is not a de Polignac number, because 70681825 - 2⁹ = 70681313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 14725 + ... + 18925.

Almost surely, 2^70681825 is an apocalyptic number.

It is an amenable number.

70681825 is a deficient number, since it is larger than the sum of its proper divisors (17114763).

70681825 is a wasteful number, since it uses less digits than its factorization.

70681825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4884 (or 4879 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 70681825 is about 8407.2483607896. The cubic root of 70681825 is about 413.4623018610.

The spelling of 70681825 in words is "seventy million, six hundred eighty-one thousand, eight hundred twenty-five".