155250520000 has 280 divisors, whose sum is σ = 416260066640. Its totient is φ = 57231360000.

The previous prime is 155250519997. The next prime is 155250520031. The reversal of 155250520000 is 25052551.

It is a happy number.

155250520000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28117240 + ... + 28122760.

Almost surely, 2^155250520000 is an apocalyptic number.

155250520000 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 155250520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208130033320).

155250520000 is an abundant number, since it is smaller than the sum of its proper divisors (261009546640).

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

155250520000 is an equidigital number, since it uses as much as digits as its factorization.

155250520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609 (or 5584 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

Adding to 155250520000 its reverse (25052551), we get a palindrome (155275572551).

The spelling of 155250520000 in words is "one hundred fifty-five billion, two hundred fifty million, five hundred twenty thousand".