25783742 has 4 divisors (see below), whose sum is σ = 38675616. Its totient is φ = 12891870.

The previous prime is 25783733. The next prime is 25783763. The reversal of 25783742 is 24738752.

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

It is a junction number, because it is equal to n+sod(n) for n = 25783696 and 25783705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6445934 + ... + 6445937.

It is an arithmetic number, because the mean of its divisors is an integer number (9668904).

Almost surely, 2^25783742 is an apocalyptic number.

25783742 is a deficient number, since it is larger than the sum of its proper divisors (12891874).

25783742 is a wasteful number, since it uses less digits than its factorization.

25783742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12891873.

The product of its digits is 94080, while the sum is 38.

The square root of 25783742 is about 5077.7693921642. The cubic root of 25783742 is about 295.4259555682.

The spelling of 25783742 in words is "twenty-five million, seven hundred eighty-three thousand, seven hundred forty-two".