25480289 has 4 divisors (see below), whose sum is σ = 25539840. Its totient is φ = 25420740.

The previous prime is 25480261. The next prime is 25480303. The reversal of 25480289 is 98208452.

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 a de Polignac number, because none of the positive numbers 2^k-25480289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25480489) 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, 29129 + ... + 29990.

It is an arithmetic number, because the mean of its divisors is an integer number (6384960).

Almost surely, 2^25480289 is an apocalyptic number.

It is an amenable number.

25480289 is a deficient number, since it is larger than the sum of its proper divisors (59551).

25480289 is an equidigital number, since it uses as much as digits as its factorization.

25480289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59550.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 25480289 is about 5047.8004120607. The cubic root of 25480289 is about 294.2624070590.

The spelling of 25480289 in words is "twenty-five million, four hundred eighty thousand, two hundred eighty-nine".