20950625 has 10 divisors (see below), whose sum is σ = 26180682. Its totient is φ = 16760000.

The previous prime is 20950603. The next prime is 20950639. The reversal of 20950625 is 52605902.

It can be written as a sum of positive squares in 5 ways, for example, as 10601536 + 10349089 = 3256^2 + 3217^2 .

It is not a de Polignac number, because 20950625 - 2¹⁰ = 20949601 is a prime.

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 9 ways as a sum of consecutive naturals, for example, 16136 + ... + 17385.

Almost surely, 2^20950625 is an apocalyptic number.

20950625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20950625 is a deficient number, since it is larger than the sum of its proper divisors (5230057).

20950625 is an frugal number, since it uses more digits than its factorization.

20950625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33541 (or 33526 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 20950625 is about 4577.1852704473. The cubic root of 20950625 is about 275.6760227459.

The spelling of 20950625 in words is "twenty million, nine hundred fifty thousand, six hundred twenty-five".