25385544 has 48 divisors (see below), whose sum is σ = 69638400. Its totient is φ = 8352864.

The previous prime is 25385533. The next prime is 25385561. The reversal of 25385544 is 44558352.

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

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 25385499 and 25385508.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3457 + ... + 7919.

It is an arithmetic number, because the mean of its divisors is an integer number (1450800).

Almost surely, 2^25385544 is an apocalyptic number.

25385544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25385544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34819200).

25385544 is an abundant number, since it is smaller than the sum of its proper divisors (44252856).

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

25385544 is a wasteful number, since it uses less digits than its factorization.

25385544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4554 (or 4547 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The square root of 25385544 is about 5038.4068910718. The cubic root of 25385544 is about 293.8972291080.

The spelling of 25385544 in words is "twenty-five million, three hundred eighty-five thousand, five hundred forty-four".