25731042 has 16 divisors (see below), whose sum is σ = 51563712. Its totient is φ = 8560080.

The previous prime is 25731029. The next prime is 25731049. The reversal of 25731042 is 24013752.

It is not an unprimeable number, because it can be changed into a prime (25731049) 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 7 ways as a sum of consecutive naturals, for example, 718 + ... + 7209.

It is an arithmetic number, because the mean of its divisors is an integer number (3222732).

Almost surely, 2^25731042 is an apocalyptic number.

25731042 is an abundant number, since it is smaller than the sum of its proper divisors (25832670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25731042 is a wasteful number, since it uses less digits than its factorization.

25731042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8473.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 25731042 is about 5072.5774513555. The cubic root of 25731042 is about 295.2245422490.

Adding to 25731042 its reverse (24013752), we get a palindrome (49744794).

The spelling of 25731042 in words is "twenty-five million, seven hundred thirty-one thousand, forty-two".