20251025516420 has 48 divisors (see below), whose sum is σ = 43568056683648. Its totient is φ = 7902176106240.

The previous prime is 20251025516353. The next prime is 20251025516431. The reversal of 20251025516420 is 2461552015202.

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, 8799209 + ... + 10859471.

It is an arithmetic number, because the mean of its divisors is an integer number (907667847576).

Almost surely, 2^{20251025516420} is an apocalyptic number.

20251025516420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20251025516420 is an abundant number, since it is smaller than the sum of its proper divisors (23317031167228).

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

20251025516420 is a wasteful number, since it uses less digits than its factorization.

20251025516420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072300 (or 2072298 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 20251025516420 in words is "twenty trillion, two hundred fifty-one billion, twenty-five million, five hundred sixteen thousand, four hundred twenty".