25398036 has 60 divisors (see below), whose sum is σ = 67976832. Its totient is φ = 8264592.

The previous prime is 25398031. The next prime is 25398059. The reversal of 25398036 is 63089352.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25398031) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13021 + ... + 14843.

Almost surely, 2^25398036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25398036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33988416).

25398036 is an abundant number, since it is smaller than the sum of its proper divisors (42578796).

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

25398036 is a wasteful number, since it uses less digits than its factorization.

25398036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882 (or 1871 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 25398036 is about 5039.6464161685. The cubic root of 25398036 is about 293.9454292717.

It can be divided in two parts, 253980 and 36, that added together give a square (254016 = 504²).

The spelling of 25398036 in words is "twenty-five million, three hundred ninety-eight thousand, thirty-six".