20630651025 has 12 divisors (see below), whose sum is σ = 34109343152. Its totient is φ = 11003013840.

The previous prime is 20630650981. The next prime is 20630651033. The reversal of 20630651025 is 52015603602.

It is not a de Polignac number, because 20630651025 - 2²⁸ = 20362215569 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20630650983 and 20630651001.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137537599 + ... + 137537748.

Almost surely, 2^20630651025 is an apocalyptic number.

20630651025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20630651025 is a deficient number, since it is larger than the sum of its proper divisors (13478692127).

20630651025 is a wasteful number, since it uses less digits than its factorization.

20630651025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275075360 (or 275075355 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 20630651025 in words is "twenty billion, six hundred thirty million, six hundred fifty-one thousand, twenty-five".