25459531 has 4 divisors (see below), whose sum is σ = 25839592. Its totient is φ = 25079472.

The previous prime is 25459519. The next prime is 25459541. The reversal of 25459531 is 13595452.

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 25459531 - 2⁷ = 25459403 is a prime.

It is a super-2 number, since 2×25459531² = 1296375437479922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25459501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189930 + ... + 190063.

It is an arithmetic number, because the mean of its divisors is an integer number (6459898).

Almost surely, 2^25459531 is an apocalyptic number.

25459531 is a deficient number, since it is larger than the sum of its proper divisors (380061).

25459531 is an equidigital number, since it uses as much as digits as its factorization.

25459531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380060.

The product of its digits is 27000, while the sum is 34.

The square root of 25459531 is about 5045.7438500185. The cubic root of 25459531 is about 294.1824765351.

The spelling of 25459531 in words is "twenty-five million, four hundred fifty-nine thousand, five hundred thirty-one".