25436425 has 24 divisors (see below), whose sum is σ = 36283392. Its totient is φ = 17328000.

The previous prime is 25436419. The next prime is 25436479. The reversal of 25436425 is 52463452.

It is not a de Polignac number, because 25436425 - 2⁷ = 25436297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33045 + ... + 33805.

It is an arithmetic number, because the mean of its divisors is an integer number (1511808).

Almost surely, 2^25436425 is an apocalyptic number.

25436425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25436425 is a deficient number, since it is larger than the sum of its proper divisors (10846967).

25436425 is a wasteful number, since it uses less digits than its factorization.

25436425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969 (or 964 counting only the distinct ones).

The product of its digits is 28800, while the sum is 31.

The square root of 25436425 is about 5043.4536777887. The cubic root of 25436425 is about 294.0934537159.

Adding to 25436425 its reverse (52463452), we get a palindrome (77899877).

The spelling of 25436425 in words is "twenty-five million, four hundred thirty-six thousand, four hundred twenty-five".