20446515025 has 24 divisors (see below), whose sum is σ = 25477349504. Its totient is φ = 16277630400.

The previous prime is 20446515013. The next prime is 20446515041. The reversal of 20446515025 is 52051564402.

It is not a de Polignac number, because 20446515025 - 2⁹ = 20446514513 is a prime.

It is a Duffinian 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, 4796395 + ... + 4800655.

Almost surely, 2^20446515025 is an apocalyptic number.

20446515025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20446515025 is a deficient number, since it is larger than the sum of its proper divisors (5030834479).

20446515025 is a wasteful number, since it uses less digits than its factorization.

20446515025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5161 (or 5156 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 20446515025 in words is "twenty billion, four hundred forty-six million, five hundred fifteen thousand, twenty-five".