70509225 has 24 divisors (see below), whose sum is σ = 116867520. Its totient is φ = 37510720.

The previous prime is 70509181. The next prime is 70509227. The reversal of 70509225 is 52290507.

It is a happy number.

It is not a de Polignac number, because 70509225 - 2⁸ = 70508969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70509192 and 70509201.

It is not an unprimeable number, because it can be changed into a prime (70509227) 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 23 ways as a sum of consecutive naturals, for example, 37252 + ... + 39098.

It is an arithmetic number, because the mean of its divisors is an integer number (4869480).

Almost surely, 2^70509225 is an apocalyptic number.

70509225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70509225 is a deficient number, since it is larger than the sum of its proper divisors (46358295).

70509225 is a wasteful number, since it uses less digits than its factorization.

70509225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369 (or 2364 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 70509225 is about 8396.9771346598. The cubic root of 70509225 is about 413.1254790143.

The spelling of 70509225 in words is "seventy million, five hundred nine thousand, two hundred twenty-five".