20425712442 has 32 divisors (see below), whose sum is σ = 42635524608. Its totient is φ = 6511331376.

The previous prime is 20425712441. The next prime is 20425712459. The reversal of 20425712442 is 24421752402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20425712441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 994893 + ... + 1015215.

It is an arithmetic number, because the mean of its divisors is an integer number (1332360144).

Almost surely, 2^20425712442 is an apocalyptic number.

20425712442 is an abundant number, since it is smaller than the sum of its proper divisors (22209812166).

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

20425712442 is a wasteful number, since it uses less digits than its factorization.

20425712442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27634.

The product of its (nonzero) digits is 35840, while the sum is 33.

The spelling of 20425712442 in words is "twenty billion, four hundred twenty-five million, seven hundred twelve thousand, four hundred forty-two".