25391011 has 16 divisors (see below), whose sum is σ = 28224000. Its totient is φ = 22733568.

The previous prime is 25390997. The next prime is 25391017. The reversal of 25391011 is 11019352.

It is a de Polignac number, because none of the positive numbers 2^k-25391011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25391017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42090 + ... + 42688.

It is an arithmetic number, because the mean of its divisors is an integer number (1764000).

Almost surely, 2^25391011 is an apocalyptic number.

25391011 is a deficient number, since it is larger than the sum of its proper divisors (2832989).

25391011 is a wasteful number, since it uses less digits than its factorization.

25391011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 25391011 is about 5038.9493944671. The cubic root of 25391011 is about 293.9183253773.

The spelling of 25391011 in words is "twenty-five million, three hundred ninety-one thousand, eleven".