25992481 has 4 divisors (see below), whose sum is σ = 26023600. Its totient is φ = 25961364.

The previous prime is 25992479. The next prime is 25992487. The reversal of 25992481 is 18429952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25992481 - 2¹ = 25992479 is a prime.

It is a super-2 number, since 2×25992481² = 1351218137070722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25992487) 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, 14271 + ... + 15988.

It is an arithmetic number, because the mean of its divisors is an integer number (6505900).

Almost surely, 2^25992481 is an apocalyptic number.

It is an amenable number.

25992481 is a deficient number, since it is larger than the sum of its proper divisors (31119).

25992481 is an equidigital number, since it uses as much as digits as its factorization.

25992481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31118.

The product of its digits is 51840, while the sum is 40.

The square root of 25992481 is about 5098.2821616698. The cubic root of 25992481 is about 296.2210463849.

The spelling of 25992481 in words is "twenty-five million, nine hundred ninety-two thousand, four hundred eighty-one".