20477636725 has 48 divisors (see below), whose sum is σ = 31273748352. Its totient is φ = 12952661760.

The previous prime is 20477636719. The next prime is 20477636747. The reversal of 20477636725 is 52763677402.

It is not a de Polignac number, because 20477636725 - 2¹⁵ = 20477603957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5100819 + ... + 5104831.

It is an arithmetic number, because the mean of its divisors is an integer number (651536424).

Almost surely, 2^20477636725 is an apocalyptic number.

20477636725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20477636725 is a deficient number, since it is larger than the sum of its proper divisors (10796111627).

20477636725 is a wasteful number, since it uses less digits than its factorization.

20477636725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6286 (or 6281 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 49.

The spelling of 20477636725 in words is "twenty billion, four hundred seventy-seven million, six hundred thirty-six thousand, seven hundred twenty-five".