25445481 has 8 divisors (see below), whose sum is σ = 35923104. Its totient is φ = 15965760.

The previous prime is 25445467. The next prime is 25445489. The reversal of 25445481 is 18454452.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25445481 - 2⁶ = 25445417 is a prime.

It is a super-2 number, since 2×25445481² = 1294945006642722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25445489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249415 + ... + 249516.

It is an arithmetic number, because the mean of its divisors is an integer number (4490388).

Almost surely, 2^25445481 is an apocalyptic number.

It is an amenable number.

25445481 is a deficient number, since it is larger than the sum of its proper divisors (10477623).

25445481 is a wasteful number, since it uses less digits than its factorization.

25445481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498951.

The product of its digits is 25600, while the sum is 33.

The square root of 25445481 is about 5044.3513953728. The cubic root of 25445481 is about 294.1283511030.

The spelling of 25445481 in words is "twenty-five million, four hundred forty-five thousand, four hundred eighty-one".