25378388 has 12 divisors (see below), whose sum is σ = 50756832. Its totient is φ = 10876440.

The previous prime is 25378387. The next prime is 25378391. The reversal of 25378388 is 88387352.

25378388 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25378387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453158 + ... + 453213.

It is an arithmetic number, because the mean of its divisors is an integer number (4229736).

Almost surely, 2^25378388 is an apocalyptic number.

25378388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25378388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25378388 is a wasteful number, since it uses less digits than its factorization.

25378388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906382 (or 906380 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 25378388 is about 5037.6966959117. The cubic root of 25378388 is about 293.8696106831.

The spelling of 25378388 in words is "twenty-five million, three hundred seventy-eight thousand, three hundred eighty-eight".