25885481 has 4 divisors (see below), whose sum is σ = 25899732. Its totient is φ = 25871232.

The previous prime is 25885427. The next prime is 25885493. The reversal of 25885481 is 18458852.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3936256 + 21949225 = 1984^2 + 4685^2 .

It is a cyclic number.

It is not a de Polignac number, because 25885481 - 2⁶ = 25885417 is a prime.

It is a super-2 number, since 2×25885481² = 1340116253202722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25885381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3920 + ... + 8193.

It is an arithmetic number, because the mean of its divisors is an integer number (6474933).

Almost surely, 2^25885481 is an apocalyptic number.

It is an amenable number.

25885481 is a deficient number, since it is larger than the sum of its proper divisors (14251).

25885481 is a wasteful number, since it uses less digits than its factorization.

25885481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14250.

The product of its digits is 102400, while the sum is 41.

The square root of 25885481 is about 5087.7776091335. Note that the first 3 decimals coincide. The cubic root of 25885481 is about 295.8140152873.

It can be divided in two parts, 25 and 885481, that multiplied together give a square (22137025 = 4705²).

The spelling of 25885481 in words is "twenty-five million, eight hundred eighty-five thousand, four hundred eighty-one".