1020225543 has 16 divisors (see below), whose sum is σ = 1375266816. Its totient is φ = 672682400.

The previous prime is 1020225529. The next prime is 1020225617. The reversal of 1020225543 is 3455220201.

It is a cyclic number.

It is not a de Polignac number, because 1020225543 - 2⁴ = 1020225527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020225523) 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, 551446 + ... + 553292.

It is an arithmetic number, because the mean of its divisors is an integer number (85954176).

Almost surely, 2^1020225543 is an apocalyptic number.

1020225543 is a deficient number, since it is larger than the sum of its proper divisors (355041273).

1020225543 is a wasteful number, since it uses less digits than its factorization.

1020225543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3774.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 1020225543 is about 31940.9696628014. The cubic root of 1020225543 is about 1006.6968990940.

Adding to 1020225543 its reverse (3455220201), we get a palindrome (4475445744).

The spelling of 1020225543 in words is "one billion, twenty million, two hundred twenty-five thousand, five hundred forty-three".