70555725 has 24 divisors (see below), whose sum is σ = 129614720. Its totient is φ = 37629360.

The previous prime is 70555717. The next prime is 70555787. The reversal of 70555725 is 52755507.

It is not a de Polignac number, because 70555725 - 2³ = 70555717 is a prime.

It is a super-2 number, since 2×70555725² = 9956220660551250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70555725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51589 + ... + 52938.

Almost surely, 2^70555725 is an apocalyptic number.

70555725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70555725 is a deficient number, since it is larger than the sum of its proper divisors (59058995).

70555725 is a wasteful number, since it uses less digits than its factorization.

70555725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104546 (or 104535 counting only the distinct ones).

The product of its (nonzero) digits is 61250, while the sum is 36.

The square root of 70555725 is about 8399.7455318599. The cubic root of 70555725 is about 413.2162761799.

The spelling of 70555725 in words is "seventy million, five hundred fifty-five thousand, seven hundred twenty-five".