25545489 has 8 divisors (see below), whose sum is σ = 34265280. Its totient is φ = 16928016.

The previous prime is 25545473. The next prime is 25545493. The reversal of 25545489 is 98454552.

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

It is not a de Polignac number, because 25545489 - 2⁴ = 25545473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25545489.

It is not an unprimeable number, because it can be changed into a prime (25545409) 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 7 ways as a sum of consecutive naturals, for example, 24994 + ... + 25995.

It is an arithmetic number, because the mean of its divisors is an integer number (4283160).

Almost surely, 2^25545489 is an apocalyptic number.

It is an amenable number.

25545489 is a deficient number, since it is larger than the sum of its proper divisors (8719791).

25545489 is a wasteful number, since it uses less digits than its factorization.

25545489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51159.

The product of its digits is 288000, while the sum is 42.

The square root of 25545489 is about 5054.2545444408. The cubic root of 25545489 is about 294.5131834873.

The spelling of 25545489 in words is "twenty-five million, five hundred forty-five thousand, four hundred eighty-nine".