151225225 has 12 divisors (see below), whose sum is σ = 188256924. Its totient is φ = 120504320.

The previous prime is 151225219. The next prime is 151225259. The reversal of 151225225 is 522522151.

It can be written as a sum of positive squares in 6 ways, for example, as 1505529 + 149719696 = 1227^2 + 12236^2 .

It is not a de Polignac number, because 151225225 - 2⁹ = 151224713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151225225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5344 + ... + 18193.

It is an arithmetic number, because the mean of its divisors is an integer number (15688077).

Almost surely, 2^151225225 is an apocalyptic number.

It is an amenable number.

151225225 is a deficient number, since it is larger than the sum of its proper divisors (37031699).

151225225 is a wasteful number, since it uses less digits than its factorization.

151225225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23804 (or 23799 counting only the distinct ones).

The product of its digits is 2000, while the sum is 25.

The square root of 151225225 is about 12297.3665880139. The cubic root of 151225225 is about 532.7720255601.

Adding to 151225225 its reverse (522522151), we get a palindrome (673747376).

The spelling of 151225225 in words is "one hundred fifty-one million, two hundred twenty-five thousand, two hundred twenty-five".