25465391 has 4 divisors (see below), whose sum is σ = 29103312. Its totient is φ = 21827472.

The previous prime is 25465373. The next prime is 25465397. The reversal of 25465391 is 19356452.

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

It is a cyclic number.

It is not a de Polignac number, because 25465391 - 2¹⁰ = 25464367 is a prime.

It is a super-2 number, since 2×25465391² = 1296972277565762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25465397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1818950 + ... + 1818963.

It is an arithmetic number, because the mean of its divisors is an integer number (7275828).

Almost surely, 2^25465391 is an apocalyptic number.

25465391 is a deficient number, since it is larger than the sum of its proper divisors (3637921).

25465391 is an equidigital number, since it uses as much as digits as its factorization.

25465391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637920.

The product of its digits is 32400, while the sum is 35.

The square root of 25465391 is about 5046.3245040326. The cubic root of 25465391 is about 294.2050453859.

The spelling of 25465391 in words is "twenty-five million, four hundred sixty-five thousand, three hundred ninety-one".