70025274821721 has 4 divisors (see below), whose sum is σ = 93367033095632. Its totient is φ = 46683516547812.

The previous prime is 70025274821597. The next prime is 70025274821753. The reversal of 70025274821721 is 12712847252007.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 70025274821721 - 2⁹ = 70025274821209 is a prime.

It is a super-2 number, since 2×70025274821721² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70025274821521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11670879136951 + ... + 11670879136956.

It is an arithmetic number, because the mean of its divisors is an integer number (23341758273908).

Almost surely, 2^{70025274821721} is an apocalyptic number.

It is an amenable number.

70025274821721 is a deficient number, since it is larger than the sum of its proper divisors (23341758273911).

70025274821721 is a wasteful number, since it uses less digits than its factorization.

70025274821721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23341758273910.

The product of its (nonzero) digits is 878080, while the sum is 48.

The spelling of 70025274821721 in words is "seventy trillion, twenty-five billion, two hundred seventy-four million, eight hundred twenty-one thousand, seven hundred twenty-one".