25394980 has 24 divisors (see below), whose sum is σ = 57432312. Its totient is φ = 9376512.

The previous prime is 25394977. The next prime is 25394989. The reversal of 25394980 is 8949352.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2965284 + 22429696 = 1722^2 + 4736^2 .

It is not an unprimeable number, because it can be changed into a prime (25394989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48577 + ... + 49096.

It is an arithmetic number, because the mean of its divisors is an integer number (2393013).

Almost surely, 2^25394980 is an apocalyptic number.

25394980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25394980 is an abundant number, since it is smaller than the sum of its proper divisors (32037332).

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

25394980 is a wasteful number, since it uses less digits than its factorization.

25394980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97695 (or 97693 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 25394980 is about 5039.3432111735. The cubic root of 25394980 is about 293.9336392097.

The spelling of 25394980 in words is "twenty-five million, three hundred ninety-four thousand, nine hundred eighty".