25148916 has 144 divisors (see below), whose sum is σ = 75675600. Its totient is φ = 6967296.

The previous prime is 25148911. The next prime is 25148923. The reversal of 25148916 is 61984152.

It can be written as a sum of positive squares in 8 ways, for example, as 108900 + 25040016 = 330^2 + 5004^2 .

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 (25148911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 230670 + ... + 230778.

It is an arithmetic number, because the mean of its divisors is an integer number (525525).

Almost surely, 2^25148916 is an apocalyptic number.

25148916 is a gapful number since it is divisible by the number (26) 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 25148916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37837800).

25148916 is an abundant number, since it is smaller than the sum of its proper divisors (50526684).

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

25148916 is a wasteful number, since it uses less digits than its factorization.

25148916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 173 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 25148916 is about 5014.8694898272. The cubic root of 25148916 is about 292.9812022249.

The spelling of 25148916 in words is "twenty-five million, one hundred forty-eight thousand, nine hundred sixteen".