25202489 has 8 divisors (see below), whose sum is σ = 27183240. Its totient is φ = 23227776.

The previous prime is 25202477. The next prime is 25202497. The reversal of 25202489 is 98420252.

It can be written as a sum of positive squares in 4 ways, for example, as 1776889 + 23425600 = 1333^2 + 4840^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-25202489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25202389) 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, 11147 + ... + 13215.

It is an arithmetic number, because the mean of its divisors is an integer number (3397905).

Almost surely, 2^25202489 is an apocalyptic number.

It is an amenable number.

25202489 is a deficient number, since it is larger than the sum of its proper divisors (1980751).

25202489 is a wasteful number, since it uses less digits than its factorization.

25202489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 25202489 is about 5020.2080634173. The cubic root of 25202489 is about 293.1890938869.

The spelling of 25202489 in words is "twenty-five million, two hundred two thousand, four hundred eighty-nine".