25305723 has 16 divisors (see below), whose sum is σ = 37655200. Its totient is φ = 16796160.

The previous prime is 25305697. The next prime is 25305757. The reversal of 25305723 is 32750352.

It is not a de Polignac number, because 25305723 - 2⁵ = 25305691 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25305823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4563 + ... + 8451.

It is an arithmetic number, because the mean of its divisors is an integer number (2353450).

Almost surely, 2^25305723 is an apocalyptic number.

25305723 is a deficient number, since it is larger than the sum of its proper divisors (12349477).

25305723 is a wasteful number, since it uses less digits than its factorization.

25305723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139 (or 4133 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 25305723 is about 5030.4794006138. The cubic root of 25305723 is about 293.5888672347.

The spelling of 25305723 in words is "twenty-five million, three hundred five thousand, seven hundred twenty-three".