20425542000 has 160 divisors (see below), whose sum is σ = 67253981184. Its totient is φ = 5330848000.

The previous prime is 20425541977. The next prime is 20425542031. The reversal of 20425542000 is 24552402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245785 + ... + 318215.

Almost surely, 2^20425542000 is an apocalyptic number.

20425542000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20425542000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33626990592).

20425542000 is an abundant number, since it is smaller than the sum of its proper divisors (46828439184).

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

20425542000 is a wasteful number, since it uses less digits than its factorization.

20425542000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72504 (or 72488 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The spelling of 20425542000 in words is "twenty billion, four hundred twenty-five million, five hundred forty-two thousand".