25143425 has 24 divisors (see below), whose sum is σ = 33542496. Its totient is φ = 18627840.

The previous prime is 25143413. The next prime is 25143427. The reversal of 25143425 is 52434152.

It is a happy number.

It is not a de Polignac number, because 25143425 - 2¹⁴ = 25127041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25143394 and 25143403.

It is not an unprimeable number, because it can be changed into a prime (25143427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28034 + ... + 28916.

It is an arithmetic number, because the mean of its divisors is an integer number (1397604).

Almost surely, 2^25143425 is an apocalyptic number.

25143425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25143425 is a deficient number, since it is larger than the sum of its proper divisors (8399071).

25143425 is a wasteful number, since it uses less digits than its factorization.

25143425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977 (or 972 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 25143425 is about 5014.3219880658. The cubic root of 25143425 is about 292.9598775565.

Adding to 25143425 its reverse (52434152), we get a palindrome (77577577).

The spelling of 25143425 in words is "twenty-five million, one hundred forty-three thousand, four hundred twenty-five".