70512505 has 8 divisors (see below), whose sum is σ = 96702912. Its totient is φ = 48351408.

The previous prime is 70512499. The next prime is 70512509. The reversal of 70512505 is 50521507.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70512505 - 2⁵ = 70512473 is a prime.

It is a super-2 number, since 2×70512505² = 9944026722750050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70512505.

It is not an unprimeable number, because it can be changed into a prime (70512509) 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 7 ways as a sum of consecutive naturals, for example, 1007287 + ... + 1007356.

It is an arithmetic number, because the mean of its divisors is an integer number (12087864).

Almost surely, 2^70512505 is an apocalyptic number.

It is an amenable number.

70512505 is a deficient number, since it is larger than the sum of its proper divisors (26190407).

70512505 is a wasteful number, since it uses less digits than its factorization.

70512505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014655.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 70512505 is about 8397.1724407684. The cubic root of 70512505 is about 413.1318849400.

It can be divided in two parts, 70512 and 505, that added together give a palindrome (71017).

The spelling of 70512505 in words is "seventy million, five hundred twelve thousand, five hundred five".