20425617262 has 4 divisors (see below), whose sum is σ = 30638425896. Its totient is φ = 10212808630.

The previous prime is 20425617259. The next prime is 20425617271. The reversal of 20425617262 is 26271652402.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106404314 + ... + 5106404317.

It is an arithmetic number, because the mean of its divisors is an integer number (7659606474).

Almost surely, 2^20425617262 is an apocalyptic number.

20425617262 is a deficient number, since it is larger than the sum of its proper divisors (10212808634).

20425617262 is a wasteful number, since it uses less digits than its factorization.

20425617262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10212808633.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 20425617262 in words is "twenty billion, four hundred twenty-five million, six hundred seventeen thousand, two hundred sixty-two".