42525221000 has 64 divisors (see below), whose sum is σ = 99727832880. Its totient is φ = 16972684800.

The previous prime is 42525220949. The next prime is 42525221017. The reversal of 42525221000 is 12252524.

It can be written as a sum of positive squares in 8 ways, for example, as 14987146084 + 27538074916 = 122422^2 + 165946^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410474 + ... + 503526.

Almost surely, 2^42525221000 is an apocalyptic number.

42525221000 is a gapful number since it is divisible by the number (40) 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 42525221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49863916440).

42525221000 is an abundant number, since it is smaller than the sum of its proper divisors (57202611880).

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

42525221000 is a wasteful number, since it uses less digits than its factorization.

42525221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93531 (or 93517 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 42525221000 its reverse (12252524), we get a palindrome (42537473524).

The spelling of 42525221000 in words is "forty-two billion, five hundred twenty-five million, two hundred twenty-one thousand".