102520225640 has 128 divisors (see below), whose sum is σ = 272383326720. Its totient is φ = 34000512000.

The previous prime is 102520225627. The next prime is 102520225649. The reversal of 102520225640 is 46522025201.

It is not an unprimeable number, because it can be changed into a prime (102520225649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1004990 + ... + 1102290.

It is an arithmetic number, because the mean of its divisors is an integer number (2127994740).

Almost surely, 2^102520225640 is an apocalyptic number.

102520225640 is a gapful number since it is divisible by the number (10) 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 102520225640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136191663360).

102520225640 is an abundant number, since it is smaller than the sum of its proper divisors (169863101080).

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

102520225640 is a wasteful number, since it uses less digits than its factorization.

102520225640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97443 (or 97439 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 102520225640 in words is "one hundred two billion, five hundred twenty million, two hundred twenty-five thousand, six hundred forty".