155015240250 has 64 divisors (see below), whose sum is σ = 416680992000. Its totient is φ = 38157595200.

The previous prime is 155015240243. The next prime is 155015240269. The reversal of 155015240250 is 52042510551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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, 7939750 + ... + 7959249.

It is an arithmetic number, because the mean of its divisors is an integer number (6510640500).

Almost surely, 2^155015240250 is an apocalyptic number.

155015240250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155015240250 is an abundant number, since it is smaller than the sum of its proper divisors (261665751750).

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

155015240250 is a wasteful number, since it uses less digits than its factorization.

155015240250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15899032 (or 15899022 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 155015240250 in words is "one hundred fifty-five billion, fifteen million, two hundred forty thousand, two hundred fifty".