25404033140 has 96 divisors (see below), whose sum is σ = 58549671936. Its totient is φ = 9228510720.

The previous prime is 25404033133. The next prime is 25404033143. The reversal of 25404033140 is 4133040452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25404033143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738974 + ... + 772586.

It is an arithmetic number, because the mean of its divisors is an integer number (609892416).

Almost surely, 2^25404033140 is an apocalyptic number.

25404033140 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 25404033140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29274835968).

25404033140 is an abundant number, since it is smaller than the sum of its proper divisors (33145638796).

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

25404033140 is a wasteful number, since it uses less digits than its factorization.

25404033140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33729 (or 33727 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 25404033140 its reverse (4133040452), we get a palindrome (29537073592).

The spelling of 25404033140 in words is "twenty-five billion, four hundred four million, thirty-three thousand, one hundred forty".