25116311 has 4 divisors (see below), whose sum is σ = 27399624. Its totient is φ = 22833000.

The previous prime is 25116277. The next prime is 25116319. The reversal of 25116311 is 11361152.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25116311 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 (25116319) 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, 1141640 + ... + 1141661.

It is an arithmetic number, because the mean of its divisors is an integer number (6849906).

Almost surely, 2^25116311 is an apocalyptic number.

25116311 is a deficient number, since it is larger than the sum of its proper divisors (2283313).

25116311 is a wasteful number, since it uses less digits than its factorization.

25116311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283312.

The product of its digits is 180, while the sum is 20.

The square root of 25116311 is about 5011.6176031298. The cubic root of 25116311 is about 292.8545329701.

Adding to 25116311 its reverse (11361152), we get a palindrome (36477463).

The spelling of 25116311 in words is "twenty-five million, one hundred sixteen thousand, three hundred eleven".