20425615458 has 16 divisors (see below), whose sum is σ = 40863432960. Its totient is φ = 6806504816.

The previous prime is 20425615453. The next prime is 20425615493. The reversal of 20425615458 is 85451652402.

It is not an unprimeable number, because it can be changed into a prime (20425615453) 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, 486585 + ... + 526892.

It is an arithmetic number, because the mean of its divisors is an integer number (2553964560).

Almost surely, 2^20425615458 is an apocalyptic number.

20425615458 is an abundant number, since it is smaller than the sum of its proper divisors (20437817502).

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

20425615458 is a wasteful number, since it uses less digits than its factorization.

20425615458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016841.

The product of its (nonzero) digits is 384000, while the sum is 42.

The spelling of 20425615458 in words is "twenty billion, four hundred twenty-five million, six hundred fifteen thousand, four hundred fifty-eight".