20266425 has 18 divisors (see below), whose sum is σ = 36299822. Its totient is φ = 10808640.

The previous prime is 20266409. The next prime is 20266429. The reversal of 20266425 is 52466202.

It can be written as a sum of positive squares in 3 ways, for example, as 97344 + 20169081 = 312^2 + 4491^2 .

It is not a de Polignac number, because 20266425 - 2⁴ = 20266409 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20266429) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 44812 + ... + 45261.

Almost surely, 2^20266425 is an apocalyptic number.

20266425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20266425 is a deficient number, since it is larger than the sum of its proper divisors (16033397).

20266425 is a wasteful number, since it uses less digits than its factorization.

20266425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90089 (or 90081 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 20266425 is about 4501.8246300806. The cubic root of 20266425 is about 272.6417633442.

The spelling of 20266425 in words is "twenty million, two hundred sixty-six thousand, four hundred twenty-five".