670212725 has 48 divisors (see below), whose sum is σ = 1038350208. Its totient is φ = 417795840.

The previous prime is 670212721. The next prime is 670212727. The reversal of 670212725 is 527212076.

It is not a de Polignac number, because 670212725 - 2² = 670212721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 670212691 and 670212700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670212721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150227 + ... + 154623.

It is an arithmetic number, because the mean of its divisors is an integer number (21632296).

Almost surely, 2^670212725 is an apocalyptic number.

670212725 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

670212725 is a deficient number, since it is larger than the sum of its proper divisors (368137483).

670212725 is a wasteful number, since it uses less digits than its factorization.

670212725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494 (or 4489 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 670212725 is about 25888.4670268442. The cubic root of 670212725 is about 875.1266102504.

The spelling of 670212725 in words is "six hundred seventy million, two hundred twelve thousand, seven hundred twenty-five".