1022400205225 has 24 divisors (see below), whose sum is σ = 1450647847040.
Its totient is φ = 700222475520.
The previous prime is 1022400205219. The next prime is 1022400205249. The reversal of 1022400205225 is 5225020042201.
Adding to 1022400205225 its reverse (5225020042201), we get a palindrome (6247420247426).
1022400205225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 1022400205225 - 27 = 1022400205097 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (25).
It is a self number, because there is not a number n which added to its sum of digits gives 1022400205225.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3405360 + ... + 3693409.
Almost surely, 21022400205225 is an apocalyptic number.
It is an amenable number.
1022400205225 is a deficient number, since it is larger than the sum of its proper divisors (428247641815).
1022400205225 is an equidigital number, since it uses as much as digits as its factorization.
1022400205225 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7099609 (or 7099604 counting only the distinct ones).
The product of its (nonzero) digits is 3200, while the sum is 25.
The spelling of 1022400205225 in words is "one trillion, twenty-two billion, four hundred million, two hundred five thousand, two hundred twenty-five".