25489870 has 16 divisors (see below), whose sum is σ = 52436448. Its totient is φ = 8739360.

The previous prime is 25489813. The next prime is 25489879. The reversal of 25489870 is 7898452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25489879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182001 + ... + 182140.

It is an arithmetic number, because the mean of its divisors is an integer number (3277278).

Almost surely, 2^25489870 is an apocalyptic number.

25489870 is an abundant number, since it is smaller than the sum of its proper divisors (26946578).

25489870 is a wasteful number, since it uses less digits than its factorization.

25489870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364155.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 25489870 is about 5048.7493500866. The cubic root of 25489870 is about 294.2992849089.

The spelling of 25489870 in words is "twenty-five million, four hundred eighty-nine thousand, eight hundred seventy".