25436091 has 16 divisors (see below), whose sum is σ = 36216576. Its totient is φ = 15841056.

The previous prime is 25436083. The next prime is 25436093. The reversal of 25436091 is 19063452.

It is not a de Polignac number, because 25436091 - 2³ = 25436083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25436093) 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, 1320 + ... + 7253.

It is an arithmetic number, because the mean of its divisors is an integer number (2263536).

Almost surely, 2^25436091 is an apocalyptic number.

25436091 is a deficient number, since it is larger than the sum of its proper divisors (10780485).

25436091 is a wasteful number, since it uses less digits than its factorization.

25436091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8642.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 25436091 is about 5043.4205654496. The cubic root of 25436091 is about 294.0921664851.

The spelling of 25436091 in words is "twenty-five million, four hundred thirty-six thousand, ninety-one".