150781821825 has 24 divisors (see below), whose sum is σ = 251760868416. Its totient is φ = 79620760000.

The previous prime is 150781821791. The next prime is 150781821829. The reversal of 150781821825 is 528128187051.

It is a happy number.

It is not a de Polignac number, because 150781821825 - 2¹⁰ = 150781820801 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (150781821829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9945021 + ... + 9960170.

It is an arithmetic number, because the mean of its divisors is an integer number (10490036184).

Almost surely, 2^150781821825 is an apocalyptic number.

150781821825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

150781821825 is a deficient number, since it is larger than the sum of its proper divisors (100979046591).

150781821825 is a wasteful number, since it uses less digits than its factorization.

150781821825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19905305 (or 19905300 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 48.

The spelling of 150781821825 in words is "one hundred fifty billion, seven hundred eighty-one million, eight hundred twenty-one thousand, eight hundred twenty-five".