1021725536 has 24 divisors (see below), whose sum is σ = 2166255504. Its totient is φ = 471565440.

The previous prime is 1021725533. The next prime is 1021725557. The reversal of 1021725536 is 6355271201.

1021725536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021725533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1227620 + ... + 1228451.

It is an arithmetic number, because the mean of its divisors is an integer number (90260646).

Almost surely, 2^1021725536 is an apocalyptic number.

1021725536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1021725536 is an abundant number, since it is smaller than the sum of its proper divisors (1144529968).

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

1021725536 is a wasteful number, since it uses less digits than its factorization.

1021725536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456094 (or 2456086 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 1021725536 is about 31964.4417439129. The cubic root of 1021725536 is about 1007.1900249746.

Adding to 1021725536 its reverse (6355271201), we get a palindrome (7376996737).

It can be divided in two parts, 10217 and 25536, that added together give a palindrome (35753).

The spelling of 1021725536 in words is "one billion, twenty-one million, seven hundred twenty-five thousand, five hundred thirty-six".