20227725 has 60 divisors (see below), whose sum is σ = 42851424. Its totient is φ = 9240480.

The previous prime is 20227709. The next prime is 20227729. The reversal of 20227725 is 52772202.

It is a happy number.

It is not a de Polignac number, because 20227725 - 2⁴ = 20227709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20227729) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 13462 + ... + 14888.

Almost surely, 2^20227725 is an apocalyptic number.

20227725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20227725 is an abundant number, since it is smaller than the sum of its proper divisors (22623699).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20227725 is a wasteful number, since it uses less digits than its factorization.

20227725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 20227725 is about 4497.5243190004. The cubic root of 20227725 is about 272.4681106245.

Adding to 20227725 its reverse (52772202), we get a palindrome (72999927).

The spelling of 20227725 in words is "twenty million, two hundred twenty-seven thousand, seven hundred twenty-five".