150631225 has 6 divisors (see below), whose sum is σ = 186782750. Its totient is φ = 120504960.

The previous prime is 150631223. The next prime is 150631241. The reversal of 150631225 is 522136051.

It can be written as a sum of positive squares in 3 ways, for example, as 29241 + 150601984 = 171^2 + 12272^2 .

It is not a de Polignac number, because 150631225 - 2¹ = 150631223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 6025249 = 150631225 / (1 + 5 + 0 + 6 + 3 + 1 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 150631225.

It is not an unprimeable number, because it can be changed into a prime (150631223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3012600 + ... + 3012649.

Almost surely, 2^150631225 is an apocalyptic number.

It is an amenable number.

150631225 is a deficient number, since it is larger than the sum of its proper divisors (36151525).

150631225 is an equidigital number, since it uses as much as digits as its factorization.

150631225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6025259 (or 6025254 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 150631225 is about 12273.1913127760. The cubic root of 150631225 is about 532.0735489642.

Adding to 150631225 its reverse (522136051), we get a palindrome (672767276).

The spelling of 150631225 in words is "one hundred fifty million, six hundred thirty-one thousand, two hundred twenty-five".