25787942 has 4 divisors (see below), whose sum is σ = 38681916. Its totient is φ = 12893970.

The previous prime is 25787903. The next prime is 25787947. The reversal of 25787942 is 24978752.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×25787942³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25787893 and 25787902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25787947) 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 as a sum of consecutive naturals, namely, 6446984 + ... + 6446987.

It is an arithmetic number, because the mean of its divisors is an integer number (9670479).

Almost surely, 2^25787942 is an apocalyptic number.

25787942 is a deficient number, since it is larger than the sum of its proper divisors (12893974).

25787942 is a wasteful number, since it uses less digits than its factorization.

25787942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12893973.

The product of its digits is 282240, while the sum is 44.

The square root of 25787942 is about 5078.1829427464. The cubic root of 25787942 is about 295.4419956714.

The spelling of 25787942 in words is "twenty-five million, seven hundred eighty-seven thousand, nine hundred forty-two".