25420043 has 12 divisors (see below), whose sum is σ = 29414280. Its totient is φ = 21890880.

The previous prime is 25420039. The next prime is 25420063. The reversal of 25420043 is 34002452.

It is not a de Polignac number, because 25420043 - 2² = 25420039 is a prime.

It is a super-2 number, since 2×25420043² = 1292357172243698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25419997 and 25420024.

It is not an unprimeable number, because it can be changed into a prime (25420033) 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 11 ways as a sum of consecutive naturals, for example, 3230 + ... + 7827.

It is an arithmetic number, because the mean of its divisors is an integer number (2451190).

Almost surely, 2^25420043 is an apocalyptic number.

25420043 is a deficient number, since it is larger than the sum of its proper divisors (3994237).

25420043 is a wasteful number, since it uses less digits than its factorization.

25420043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11098 (or 11087 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 25420043 is about 5041.8293307092. The cubic root of 25420043 is about 294.0303044641.

Adding to 25420043 its reverse (34002452), we get a palindrome (59422495).

The spelling of 25420043 in words is "twenty-five million, four hundred twenty thousand, forty-three".