20612966925 has 24 divisors (see below), whose sum is σ = 34093168096. Its totient is φ = 10989368640.

The previous prime is 20612966921. The next prime is 20612966947. The reversal of 20612966925 is 52966921602.

It is not a de Polignac number, because 20612966925 - 2² = 20612966921 is a prime.

It is a super-2 number, since 2×20612966925² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20612966921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149442 + ... + 252108.

Almost surely, 2^20612966925 is an apocalyptic number.

20612966925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20612966925 is a deficient number, since it is larger than the sum of its proper divisors (13480201171).

20612966925 is a wasteful number, since it uses less digits than its factorization.

20612966925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105357 (or 105352 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 20612966925 in words is "twenty billion, six hundred twelve million, nine hundred sixty-six thousand, nine hundred twenty-five".