25378400 has 36 divisors (see below), whose sum is σ = 61956972. Its totient is φ = 10151040.

The previous prime is 25378391. The next prime is 25378403. The reversal of 25378400 is 487352.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25378403) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 15062 + ... + 16661.

It is an arithmetic number, because the mean of its divisors is an integer number (1721027).

Almost surely, 2^25378400 is an apocalyptic number.

25378400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25378400 is an abundant number, since it is smaller than the sum of its proper divisors (36578572).

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

25378400 is a wasteful number, since it uses less digits than its factorization.

25378400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31743 (or 31730 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 25378400 is about 5037.6978869321. The cubic root of 25378400 is about 293.8696570011.

The spelling of 25378400 in words is "twenty-five million, three hundred seventy-eight thousand, four hundred".