20237425 has 24 divisors (see below), whose sum is σ = 27427064. Its totient is φ = 14722560.

The previous prime is 20237423. The next prime is 20237431. The reversal of 20237425 is 52473202.

20237425 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 12 ways, for example, as 13719616 + 6517809 = 3704^2 + 2553^2 .

It is not a de Polignac number, because 20237425 - 2¹ = 20237423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20237425.

It is not an unprimeable number, because it can be changed into a prime (20237423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23299 + ... + 24151.

Almost surely, 2^20237425 is an apocalyptic number.

20237425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20237425 is a deficient number, since it is larger than the sum of its proper divisors (7189639).

20237425 is a wasteful number, since it uses less digits than its factorization.

20237425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 20237425 is about 4498.6025607960. The cubic root of 20237425 is about 272.5116567693.

The spelling of 20237425 in words is "twenty million, two hundred thirty-seven thousand, four hundred twenty-five".