135125280 has 192 divisors, whose sum is σ = 488678400. Its totient is φ = 34836480.

The previous prime is 135125273. The next prime is 135125317. The reversal of 135125280 is 82521531.

It is a happy number.

135125280 is a `hidden beast` number, since 135 + 1 + 2 + 528 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133416 + ... + 134424.

It is an arithmetic number, because the mean of its divisors is an integer number (2545200).

Almost surely, 2^135125280 is an apocalyptic number.

135125280 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 135125280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244339200).

135125280 is an abundant number, since it is smaller than the sum of its proper divisors (353553120).

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

135125280 is a wasteful number, since it uses less digits than its factorization.

135125280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 135125280 is about 11624.3399812635. The cubic root of 135125280 is about 513.1514207094.

The spelling of 135125280 in words is "one hundred thirty-five million, one hundred twenty-five thousand, two hundred eighty".