25210042 has 32 divisors (see below), whose sum is σ = 44763264. Its totient is φ = 10497600.

The previous prime is 25210027. The next prime is 25210067. The reversal of 25210042 is 24001252.

It is a junction number, because it is equal to n+sod(n) for n = 25209998 and 25210025.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 51523 + ... + 52009.

It is an arithmetic number, because the mean of its divisors is an integer number (1398852).

Almost surely, 2^25210042 is an apocalyptic number.

25210042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25210042 is a deficient number, since it is larger than the sum of its proper divisors (19553222).

25210042 is a wasteful number, since it uses less digits than its factorization.

25210042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 25210042 is about 5020.9602667219. The cubic root of 25210042 is about 293.2183798308.

Adding to 25210042 its reverse (24001252), we get a palindrome (49211294).

The spelling of 25210042 in words is "twenty-five million, two hundred ten thousand, forty-two".