70666725 has 12 divisors (see below), whose sum is σ = 116835776. Its totient is φ = 37688880.

The previous prime is 70666721. The next prime is 70666727. The reversal of 70666725 is 52766607.

It is not a de Polignac number, because 70666725 - 2² = 70666721 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70666721) 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 11 ways as a sum of consecutive naturals, for example, 471037 + ... + 471186.

Almost surely, 2^70666725 is an apocalyptic number.

70666725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70666725 is a deficient number, since it is larger than the sum of its proper divisors (46169051).

70666725 is a wasteful number, since it uses less digits than its factorization.

70666725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942236 (or 942231 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 70666725 is about 8406.3502782123. The cubic root of 70666725 is about 413.4328566422.

The spelling of 70666725 in words is "seventy million, six hundred sixty-six thousand, seven hundred twenty-five".