20265475 has 24 divisors (see below), whose sum is σ = 26347520. Its totient is φ = 15444000.

The previous prime is 20265473. The next prime is 20265499. The reversal of 20265475 is 57456202.

It is not a de Polignac number, because 20265475 - 2¹ = 20265473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (20265473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61060 + ... + 61390.

Almost surely, 2^20265475 is an apocalyptic number.

20265475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20265475 is a deficient number, since it is larger than the sum of its proper divisors (6082045).

20265475 is a wasteful number, since it uses less digits than its factorization.

20265475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 20265475 is about 4501.7191160711. The cubic root of 20265475 is about 272.6375031993.

The spelling of 20265475 in words is "twenty million, two hundred sixty-five thousand, four hundred seventy-five".