20052502420 has 12 divisors (see below), whose sum is σ = 42110255124. Its totient is φ = 8021000960.

The previous prime is 20052502403. The next prime is 20052502441. The reversal of 20052502420 is 2420525002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2534921104 + 17517581316 = 50348^2 + 132354^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20052502391 and 20052502400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501312541 + ... + 501312580.

It is an arithmetic number, because the mean of its divisors is an integer number (3509187927).

Almost surely, 2^20052502420 is an apocalyptic number.

20052502420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20052502420 is an abundant number, since it is smaller than the sum of its proper divisors (22057752704).

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

20052502420 is a wasteful number, since it uses less digits than its factorization.

20052502420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002625130 (or 1002625128 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The spelling of 20052502420 in words is "twenty billion, fifty-two million, five hundred two thousand, four hundred twenty".