70025720 has 128 divisors (see below), whose sum is σ = 178459200. Its totient is φ = 24600576.

The previous prime is 70025717. The next prime is 70025741. The reversal of 70025720 is 2752007.

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 31 ways as a sum of consecutive naturals, for example, 1045127 + ... + 1045193.

Almost surely, 2^70025720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70025720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89229600).

70025720 is an abundant number, since it is smaller than the sum of its proper divisors (108433480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70025720 is a wasteful number, since it uses less digits than its factorization.

70025720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 70025720 is about 8368.1371881680. The cubic root of 70025720 is about 412.1789997324.

Adding to 70025720 its reverse (2752007), we get a palindrome (72777727).

The spelling of 70025720 in words is "seventy million, twenty-five thousand, seven hundred twenty".