151022225 has 24 divisors (see below), whose sum is σ = 190728120. Its totient is φ = 118609920.

The previous prime is 151022219. The next prime is 151022243. The reversal of 151022225 is 522220151.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 46348864 + 104673361 = 6808^2 + 10231^2 .

It is not a de Polignac number, because 151022225 - 2⁶ = 151022161 is a prime.

It is a super-3 number, since 3×151022225³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 151022197 and 151022206.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 427649 + ... + 428001.

It is an arithmetic number, because the mean of its divisors is an integer number (7947005).

Almost surely, 2^151022225 is an apocalyptic number.

It is an amenable number.

151022225 is a deficient number, since it is larger than the sum of its proper divisors (39705895).

151022225 is a wasteful number, since it uses less digits than its factorization.

151022225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 151022225 is about 12289.1100165960. The cubic root of 151022225 is about 532.5335266569.

Adding to 151022225 its reverse (522220151), we get a palindrome (673242376).

The spelling of 151022225 in words is "one hundred fifty-one million, twenty-two thousand, two hundred twenty-five".