70173225 has 18 divisors (see below), whose sum is σ = 125688446. Its totient is φ = 37425600.

The previous prime is 70173211. The next prime is 70173227. The reversal of 70173225 is 52237107.

It can be written as a sum of positive squares in 3 ways, for example, as 4173849 + 65999376 = 2043^2 + 8124^2 .

It is not a de Polignac number, because 70173225 - 2¹⁶ = 70107689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70173227) 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 17 ways as a sum of consecutive naturals, for example, 155716 + ... + 156165.

Almost surely, 2^70173225 is an apocalyptic number.

70173225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70173225 is a deficient number, since it is larger than the sum of its proper divisors (55515221).

70173225 is a wasteful number, since it uses less digits than its factorization.

70173225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311897 (or 311889 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 70173225 is about 8376.9460425623. The cubic root of 70173225 is about 412.4682069160.

The spelling of 70173225 in words is "seventy million, one hundred seventy-three thousand, two hundred twenty-five".