25905783 has 4 divisors (see below), whose sum is σ = 34541048. Its totient is φ = 17270520.

The previous prime is 25905767. The next prime is 25905821. The reversal of 25905783 is 38750952.

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

It is not a de Polignac number, because 25905783 - 2⁴ = 25905767 is a prime.

It is a super-2 number, since 2×25905783² = 1342219185686178, 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 (25905713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4317628 + ... + 4317633.

It is an arithmetic number, because the mean of its divisors is an integer number (8635262).

Almost surely, 2^25905783 is an apocalyptic number.

25905783 is a deficient number, since it is larger than the sum of its proper divisors (8635265).

25905783 is an equidigital number, since it uses as much as digits as its factorization.

25905783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8635264.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 25905783 is about 5089.7723917676. The cubic root of 25905783 is about 295.8913307877.

The spelling of 25905783 in words is "twenty-five million, nine hundred five thousand, seven hundred eighty-three".