20403125610 has 128 divisors (see below), whose sum is σ = 57403551744. Its totient is φ = 4543818240.

The previous prime is 20403125581. The next prime is 20403125641. The reversal of 20403125610 is 1652130402.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11045707 + ... + 11047553.

It is an arithmetic number, because the mean of its divisors is an integer number (448465248).

Almost surely, 2^20403125610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20403125610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28701775872).

20403125610 is an abundant number, since it is smaller than the sum of its proper divisors (37000426134).

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

20403125610 is a wasteful number, since it uses less digits than its factorization.

20403125610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3188.

The product of its (nonzero) digits is 1440, while the sum is 24.

The spelling of 20403125610 in words is "twenty billion, four hundred three million, one hundred twenty-five thousand, six hundred ten".