1025021104 has 20 divisors (see below), whose sum is σ = 1986502320. Its totient is φ = 512375360.

The previous prime is 1025021087. The next prime is 1025021111. The reversal of 1025021104 is 4011205201.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86277 + ... + 97435.

It is an arithmetic number, because the mean of its divisors is an integer number (99325116).

Almost surely, 2^1025021104 is an apocalyptic number.

It is an amenable number.

1025021104 is a deficient number, since it is larger than the sum of its proper divisors (961481216).

1025021104 is a wasteful number, since it uses less digits than its factorization.

1025021104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16908 (or 16902 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1025021104 is about 32015.9507745749. The cubic root of 1025021104 is about 1008.2717573733.

Adding to 1025021104 its reverse (4011205201), we get a palindrome (5036226305).

The spelling of 1025021104 in words is "one billion, twenty-five million, twenty-one thousand, one hundred four".