152420225 has 6 divisors (see below), whose sum is σ = 189001110. Its totient is φ = 121936160.

The previous prime is 152420221. The next prime is 152420237. The reversal of 152420225 is 522024251.

152420225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 6880129 + 145540096 = 2623^2 + 12064^2 .

It is not a de Polignac number, because 152420225 - 2² = 152420221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 152420225.

It is not an unprimeable number, because it can be changed into a prime (152420221) 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, 3048380 + ... + 3048429.

It is an arithmetic number, because the mean of its divisors is an integer number (31500185).

Almost surely, 2^152420225 is an apocalyptic number.

It is an amenable number.

152420225 is a deficient number, since it is larger than the sum of its proper divisors (36580885).

152420225 is an equidigital number, since it uses as much as digits as its factorization.

152420225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6096819 (or 6096814 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 152420225 is about 12345.8586173664. The cubic root of 152420225 is about 534.1716882140.

Adding to 152420225 its reverse (522024251), we get a palindrome (674444476).

The spelling of 152420225 in words is "one hundred fifty-two million, four hundred twenty thousand, two hundred twenty-five".