25842398400 has 1512 divisors, whose sum is σ = 119586658464. Its totient is φ = 5175705600.

The previous prime is 25842398371. The next prime is 25842398401. The reversal of 25842398400 is 489324852.

25842398400 is a `hidden beast` number, since 2 + 5 + 8 + 4 + 239 + 8 + 400 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25842398401) 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 215 ways as a sum of consecutive naturals, for example, 630302380 + ... + 630302420.

Almost surely, 2^25842398400 is an apocalyptic number.

25842398400 is a gapful number since it is divisible by the number (20) 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 25842398400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59793329232).

25842398400 is an abundant number, since it is smaller than the sum of its proper divisors (93744260064).

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

25842398400 is a wasteful number, since it uses less digits than its factorization.

25842398400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 25842398400 in words is "twenty-five billion, eight hundred forty-two million, three hundred ninety-eight thousand, four hundred".