25311023 has 4 divisors (see below), whose sum is σ = 25419888. Its totient is φ = 25202160.

The previous prime is 25311001. The next prime is 25311031. The reversal of 25311023 is 32011352.

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

It is a cyclic number.

It is not a de Polignac number, because 25311023 - 2⁶ = 25310959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25310992 and 25311010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25311053) 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 in 3 ways as a sum of consecutive naturals, for example, 54083 + ... + 54548.

It is an arithmetic number, because the mean of its divisors is an integer number (6354972).

Almost surely, 2^25311023 is an apocalyptic number.

25311023 is a deficient number, since it is larger than the sum of its proper divisors (108865).

25311023 is a wasteful number, since it uses less digits than its factorization.

25311023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108864.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 25311023 is about 5031.0061617931. The cubic root of 25311023 is about 293.6093621030.

Adding to 25311023 its reverse (32011352), we get a palindrome (57322375).

The spelling of 25311023 in words is "twenty-five million, three hundred eleven thousand, twenty-three".