70170725 has 6 divisors (see below), whose sum is σ = 87011730. Its totient is φ = 56136560.

The previous prime is 70170719. The next prime is 70170733. The reversal of 70170725 is 52707107.

It can be written as a sum of positive squares in 3 ways, for example, as 5303809 + 64866916 = 2303^2 + 8054^2 .

It is not a de Polignac number, because 70170725 - 2⁸ = 70170469 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1403390 + ... + 1403439.

It is an arithmetic number, because the mean of its divisors is an integer number (14501955).

Almost surely, 2^70170725 is an apocalyptic number.

It is an amenable number.

70170725 is a deficient number, since it is larger than the sum of its proper divisors (16841005).

70170725 is a wasteful number, since it uses less digits than its factorization.

70170725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806839 (or 2806834 counting only the distinct ones).

The product of its (nonzero) digits is 3430, while the sum is 29.

The square root of 70170725 is about 8376.7968221749. The cubic root of 70170725 is about 412.4633086434.

The spelling of 70170725 in words is "seventy million, one hundred seventy thousand, seven hundred twenty-five".