133450025400 has 144 divisors (see below), whose sum is σ = 448763196960. Its totient is φ = 35539545600.

The previous prime is 133450025389. The next prime is 133450025407. The reversal of 133450025400 is 4520054331.

133450025400 is a `hidden beast` number, since 133 + 4 + 500 + 25 + 4 + 0 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133450025407) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1321089 + ... + 1418511.

It is an arithmetic number, because the mean of its divisors is an integer number (3116411090).

Almost surely, 2^133450025400 is an apocalyptic number.

133450025400 is a gapful number since it is divisible by the number (10) 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 133450025400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224381598480).

133450025400 is an abundant number, since it is smaller than the sum of its proper divisors (315313171560).

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

133450025400 is a wasteful number, since it uses less digits than its factorization.

133450025400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98206 (or 98194 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 133450025400 its reverse (4520054331), we get a palindrome (137970079731).

The spelling of 133450025400 in words is "one hundred thirty-three billion, four hundred fifty million, twenty-five thousand, four hundred".