1025552442021 has 8 divisors (see below), whose sum is σ = 1367430393984. Its totient is φ = 683688059040.

The previous prime is 1025552442017. The next prime is 1025552442037. The reversal of 1025552442021 is 1202442555201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1025552442021 - 2² = 1025552442017 is a prime.

It is a super-2 number, since 2×1025552442021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025552442221) 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, 3214560 + ... + 3519161.

It is an arithmetic number, because the mean of its divisors is an integer number (170928799248).

Almost surely, 2^{1025552442021} is an apocalyptic number.

It is an amenable number.

1025552442021 is a deficient number, since it is larger than the sum of its proper divisors (341877951963).

1025552442021 is an equidigital number, since it uses as much as digits as its factorization.

1025552442021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6784491.

The product of its (nonzero) digits is 32000, while the sum is 33.

Adding to 1025552442021 its reverse (1202442555201), we get a palindrome (2227994997222).

The spelling of 1025552442021 in words is "one trillion, twenty-five billion, five hundred fifty-two million, four hundred forty-two thousand, twenty-one".