1025021145064 has 64 divisors (see below), whose sum is σ = 2248057405440. Its totient is φ = 428982644160.

The previous prime is 1025021145059. The next prime is 1025021145097. The reversal of 1025021145064 is 4605411205201.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11279569 + ... + 11370079.

It is an arithmetic number, because the mean of its divisors is an integer number (35125896960).

Almost surely, 2^{1025021145064} is an apocalyptic number.

1025021145064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025021145064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1124028702720).

1025021145064 is an abundant number, since it is smaller than the sum of its proper divisors (1223036260376).

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

1025021145064 is a wasteful number, since it uses less digits than its factorization.

1025021145064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95270 (or 95266 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 1025021145064 in words is "one trillion, twenty-five billion, twenty-one million, one hundred forty-five thousand, sixty-four".