20125266420 has 96 divisors (see below), whose sum is σ = 64434843648. Its totient is φ = 4597633152.

The previous prime is 20125266419. The next prime is 20125266443. The reversal of 20125266420 is 2466252102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 854847 + ... + 878073.

It is an arithmetic number, because the mean of its divisors is an integer number (671196288).

Almost surely, 2^20125266420 is an apocalyptic number.

20125266420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20125266420 is an abundant number, since it is smaller than the sum of its proper divisors (44309577228).

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

20125266420 is a wasteful number, since it uses less digits than its factorization.

20125266420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25309 (or 25307 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 20125266420 in words is "twenty billion, one hundred twenty-five million, two hundred sixty-six thousand, four hundred twenty".