70406425221 has 8 divisors (see below), whose sum is σ = 102409345824. Its totient is φ = 42670560720.

The previous prime is 70406425171. The next prime is 70406425223. The reversal of 70406425221 is 12252460407.

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

It is not a de Polignac number, because 70406425221 - 2⁹ = 70406424709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2133528037 = 70406425221 / (7 + 0 + 4 + 0 + 6 + 4 + 2 + 5 + 2 + 2 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70406425223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1066763986 + ... + 1066764051.

It is an arithmetic number, because the mean of its divisors is an integer number (12801168228).

Almost surely, 2^70406425221 is an apocalyptic number.

It is an amenable number.

70406425221 is a deficient number, since it is larger than the sum of its proper divisors (32002920603).

70406425221 is a wasteful number, since it uses less digits than its factorization.

70406425221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133528051.

The product of its (nonzero) digits is 26880, while the sum is 33.

Adding to 70406425221 its reverse (12252460407), we get a palindrome (82658885628).

The spelling of 70406425221 in words is "seventy billion, four hundred six million, four hundred twenty-five thousand, two hundred twenty-one".