20211325 has 12 divisors (see below), whose sum is σ = 25295380. Its totient is φ = 16018560.

The previous prime is 20211263. The next prime is 20211377. The reversal of 20211325 is 52311202.

It can be written as a sum of positive squares in 6 ways, for example, as 337561 + 19873764 = 581^2 + 4458^2 .

It is not a de Polignac number, because 20211325 - 2⁷ = 20211197 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 20211299 and 20211308.

It is a congruent number.

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, 984 + ... + 6433.

Almost surely, 2^20211325 is an apocalyptic number.

20211325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20211325 is a deficient number, since it is larger than the sum of its proper divisors (5084055).

20211325 is a wasteful number, since it uses less digits than its factorization.

20211325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7536 (or 7531 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 20211325 is about 4495.7007240251. The cubic root of 20211325 is about 272.3944545380.

Adding to 20211325 its reverse (52311202), we get a palindrome (72522527).

The spelling of 20211325 in words is "twenty million, two hundred eleven thousand, three hundred twenty-five".