25442425 has 24 divisors (see below), whose sum is σ = 34372800. Its totient is φ = 18607680.

The previous prime is 25442423. The next prime is 25442437. The reversal of 25442425 is 52424452.

25442425 = 81³ + 82³ + ... + 109³.

It is not a de Polignac number, because 25442425 - 2¹ = 25442423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25442393 and 25442402.

It is not an unprimeable number, because it can be changed into a prime (25442423) 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, 12852 + ... + 14698.

It is an arithmetic number, because the mean of its divisors is an integer number (1432200).

Almost surely, 2^25442425 is an apocalyptic number.

25442425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25442425 is a deficient number, since it is larger than the sum of its proper divisors (8930375).

25442425 is a wasteful number, since it uses less digits than its factorization.

25442425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905 (or 1900 counting only the distinct ones).

The product of its digits is 12800, while the sum is 28.

The square root of 25442425 is about 5044.0484732009. The cubic root of 25442425 is about 294.1165757020.

Adding to 25442425 its reverse (52424452), we get a palindrome (77866877).

The spelling of 25442425 in words is "twenty-five million, four hundred forty-two thousand, four hundred twenty-five".