70285725 has 60 divisors (see below), whose sum is σ = 132560340. Its totient is φ = 36806400.

The previous prime is 70285717. The next prime is 70285729. The reversal of 70285725 is 52758207.

It can be written as a sum of positive squares in 6 ways, for example, as 24235929 + 46049796 = 4923^2 + 6786^2 .

It is not a de Polignac number, because 70285725 - 2³ = 70285717 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 70285725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70285729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 123241 + ... + 123809.

It is an arithmetic number, because the mean of its divisors is an integer number (2209339).

Almost surely, 2^70285725 is an apocalyptic number.

70285725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70285725 is a deficient number, since it is larger than the sum of its proper divisors (62274615).

70285725 is a wasteful number, since it uses less digits than its factorization.

70285725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 70285725 is about 8383.6582110675. The cubic root of 70285725 is about 412.6885088813.

The spelling of 70285725 in words is "seventy million, two hundred eighty-five thousand, seven hundred twenty-five".