25489902 has 32 divisors (see below), whose sum is σ = 54237600. Its totient is φ = 7958528.

The previous prime is 25489897. The next prime is 25489907. The reversal of 25489902 is 20998452.

It is an interprime number because it is at equal distance from previous prime (25489897) and next prime (25489907).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25489907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26974 + ... + 27902.

It is an arithmetic number, because the mean of its divisors is an integer number (1694925).

Almost surely, 2^25489902 is an apocalyptic number.

25489902 is an abundant number, since it is smaller than the sum of its proper divisors (28747698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25489902 is a wasteful number, since it uses less digits than its factorization.

25489902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 25489902 is about 5048.7525191873. The cubic root of 25489902 is about 294.2994080634.

The spelling of 25489902 in words is "twenty-five million, four hundred eighty-nine thousand, nine hundred two".