25378783 has 4 divisors (see below), whose sum is σ = 25603488. Its totient is φ = 25154080.

The previous prime is 25378777. The next prime is 25378817. The reversal of 25378783 is 38787352.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25378783 is a prime.

It is a super-2 number, since 2×25378783² = 1288165253122178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25378733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112183 + ... + 112408.

It is an arithmetic number, because the mean of its divisors is an integer number (6400872).

Almost surely, 2^25378783 is an apocalyptic number.

25378783 is a deficient number, since it is larger than the sum of its proper divisors (224705).

25378783 is a wasteful number, since it uses less digits than its factorization.

25378783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224704.

The product of its digits is 282240, while the sum is 43.

The square root of 25378783 is about 5037.7359001837. The cubic root of 25378783 is about 293.8711353123.

The spelling of 25378783 in words is "twenty-five million, three hundred seventy-eight thousand, seven hundred eighty-three".