25498044 has 144 divisors (see below), whose sum is σ = 78704640. Its totient is φ = 7076160.

The previous prime is 25498009. The next prime is 25498073. The reversal of 25498044 is 44089452.

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

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 200709 + ... + 200835.

It is an arithmetic number, because the mean of its divisors is an integer number (546560).

Almost surely, 2^25498044 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 25498044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39352320).

25498044 is an abundant number, since it is smaller than the sum of its proper divisors (53206596).

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

25498044 is a wasteful number, since it uses less digits than its factorization.

25498044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 25498044 is about 5049.5587926075. The cubic root of 25498044 is about 294.3307398263.

The spelling of 25498044 in words is "twenty-five million, four hundred ninety-eight thousand, forty-four".