2545151225 has 12 divisors (see below), whose sum is σ = 3161551740. Its totient is φ = 2032531200.

The previous prime is 2545151221. The next prime is 2545151233. The reversal of 2545151225 is 5221515452.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 74166544 + 2470984681 = 8612^2 + 49709^2 .

It is not a de Polignac number, because 2545151225 - 2² = 2545151221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2545151191 and 2545151200.

It is not an unprimeable number, because it can be changed into a prime (2545151221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75236 + ... + 103685.

It is an arithmetic number, because the mean of its divisors is an integer number (263462645).

Almost surely, 2^2545151225 is an apocalyptic number.

2545151225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2545151225 is a deficient number, since it is larger than the sum of its proper divisors (616400515).

2545151225 is a wasteful number, since it uses less digits than its factorization.

2545151225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179500 (or 179495 counting only the distinct ones).

The product of its digits is 20000, while the sum is 32.

The square root of 2545151225 is about 50449.4918210283. The cubic root of 2545151225 is about 1365.3307262146.

Adding to 2545151225 its reverse (5221515452), we get a palindrome (7766666677).

The spelling of 2545151225 in words is "two billion, five hundred forty-five million, one hundred fifty-one thousand, two hundred twenty-five".