70444225 has 6 divisors (see below), whose sum is σ = 87350870. Its totient is φ = 56355360.

The previous prime is 70444223. The next prime is 70444237. The reversal of 70444225 is 52244407.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 35344 + 70408881 = 188^2 + 8391^2 .

It is not a de Polignac number, because 70444225 - 2¹ = 70444223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70444193 and 70444202.

It is not an unprimeable number, because it can be changed into a prime (70444223) 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 5 ways as a sum of consecutive naturals, for example, 1408860 + ... + 1408909.

Almost surely, 2^70444225 is an apocalyptic number.

It is an amenable number.

70444225 is a deficient number, since it is larger than the sum of its proper divisors (16906645).

70444225 is a wasteful number, since it uses less digits than its factorization.

70444225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2817779 (or 2817774 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 70444225 is about 8393.1058017876. The cubic root of 70444225 is about 412.9984913186.

The spelling of 70444225 in words is "seventy million, four hundred forty-four thousand, two hundred twenty-five".