70320025 has 6 divisors (see below), whose sum is σ = 87196862. Its totient is φ = 56256000.

The previous prime is 70320011. The next prime is 70320049. The reversal of 70320025 is 52002307.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12362256 + 57957769 = 3516^2 + 7613^2 .

It is not a de Polignac number, because 70320025 - 2¹¹ = 70317977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70319984 and 70320011.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1406376 + ... + 1406425.

Almost surely, 2^70320025 is an apocalyptic number.

It is an amenable number.

70320025 is a deficient number, since it is larger than the sum of its proper divisors (16876837).

70320025 is a wasteful number, since it uses less digits than its factorization.

70320025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812811 (or 2812806 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 70320025 is about 8385.7036079270. The cubic root of 70320025 is about 412.7556297362.

The spelling of 70320025 in words is "seventy million, three hundred twenty thousand, twenty-five".