25321071 has 4 divisors (see below), whose sum is σ = 33761432. Its totient is φ = 16880712.

The previous prime is 25321013. The next prime is 25321099. The reversal of 25321071 is 17012352.

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

It is not a de Polignac number, because 25321071 - 2¹⁰ = 25320047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25321271) 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, 4220176 + ... + 4220181.

It is an arithmetic number, because the mean of its divisors is an integer number (8440358).

Almost surely, 2^25321071 is an apocalyptic number.

25321071 is a deficient number, since it is larger than the sum of its proper divisors (8440361).

25321071 is an equidigital number, since it uses as much as digits as its factorization.

25321071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440360.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 25321071 is about 5032.0046701091. The cubic root of 25321071 is about 293.6482094274.

The spelling of 25321071 in words is "twenty-five million, three hundred twenty-one thousand, seventy-one".