70681725 has 36 divisors (see below), whose sum is σ = 127578516. Its totient is φ = 37405440.

The previous prime is 70681711. The next prime is 70681727. The reversal of 70681725 is 52718607.

It can be written as a sum of positive squares in 6 ways, for example, as 2965284 + 67716441 = 1722^2 + 8229^2 .

It is not a de Polignac number, because 70681725 - 2⁵ = 70681693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70681725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70681727) 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 35 ways as a sum of consecutive naturals, for example, 29679 + ... + 31971.

Almost surely, 2^70681725 is an apocalyptic number.

70681725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70681725 is a deficient number, since it is larger than the sum of its proper divisors (56896791).

70681725 is a wasteful number, since it uses less digits than its factorization.

70681725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446 (or 2438 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 70681725 is about 8407.2424135385. The cubic root of 70681725 is about 413.4621068733.

The spelling of 70681725 in words is "seventy million, six hundred eighty-one thousand, seven hundred twenty-five".