25312071 has 4 divisors (see below), whose sum is σ = 33749432. Its totient is φ = 16874712.

The previous prime is 25312051. The next prime is 25312073. The reversal of 25312071 is 17021352.

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

It is not a de Polignac number, because 25312071 - 2¹¹ = 25310023 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 (25312073) 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, 4218676 + ... + 4218681.

It is an arithmetic number, because the mean of its divisors is an integer number (8437358).

Almost surely, 2^25312071 is an apocalyptic number.

25312071 is a deficient number, since it is larger than the sum of its proper divisors (8437361).

25312071 is an equidigital number, since it uses as much as digits as its factorization.

25312071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8437360.

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

The square root of 25312071 is about 5031.1103148311. The cubic root of 25312071 is about 293.6134143344.

The spelling of 25312071 in words is "twenty-five million, three hundred twelve thousand, seventy-one".