20066454725 has 24 divisors (see below), whose sum is σ = 25544948352. Its totient is φ = 15627427200.

The previous prime is 20066454697. The next prime is 20066454739. The reversal of 20066454725 is 52745466002.

It is a de Polignac number, because none of the positive numbers 2^k-20066454725 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 453434 + ... + 495716.

It is an arithmetic number, because the mean of its divisors is an integer number (1064372848).

Almost surely, 2^20066454725 is an apocalyptic number.

20066454725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20066454725 is a deficient number, since it is larger than the sum of its proper divisors (5478493627).

20066454725 is a wasteful number, since it uses less digits than its factorization.

20066454725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42797 (or 42792 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 20066454725 in words is "twenty billion, sixty-six million, four hundred fifty-four thousand, seven hundred twenty-five".