25280481 has 4 divisors (see below), whose sum is σ = 33707312. Its totient is φ = 16853652.

The previous prime is 25280471. The next prime is 25280527. The reversal of 25280481 is 18408252.

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 not a de Polignac number, because 25280481 - 2⁵ = 25280449 is a prime.

It is a super-2 number, since 2×25280481² = 1278205439182722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25280461) 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, 4213411 + ... + 4213416.

It is an arithmetic number, because the mean of its divisors is an integer number (8426828).

Almost surely, 2^25280481 is an apocalyptic number.

It is an amenable number.

25280481 is a deficient number, since it is larger than the sum of its proper divisors (8426831).

25280481 is an equidigital number, since it uses as much as digits as its factorization.

25280481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8426830.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 25280481 is about 5027.9698686448. The cubic root of 25280481 is about 293.4912182353.

The spelling of 25280481 in words is "twenty-five million, two hundred eighty thousand, four hundred eighty-one".