2451025145 has 4 divisors (see below), whose sum is σ = 2941230180. Its totient is φ = 1960820112.

The previous prime is 2451025127. The next prime is 2451025169. The reversal of 2451025145 is 5415201542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1522482361 + 928542784 = 39019^2 + 30472^2 .

It is a cyclic number.

It is not a de Polignac number, because 2451025145 - 2¹⁴ = 2451008761 is a prime.

It is a super-2 number, since 2×2451025145² = 12015048522844542050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245102510 + ... + 245102519.

It is an arithmetic number, because the mean of its divisors is an integer number (735307545).

Almost surely, 2^2451025145 is an apocalyptic number.

It is an amenable number.

2451025145 is a deficient number, since it is larger than the sum of its proper divisors (490205035).

2451025145 is an equidigital number, since it uses as much as digits as its factorization.

2451025145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490205034.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 2451025145 is about 49507.8291283308. The cubic root of 2451025145 is about 1348.2877505693.

Adding to 2451025145 its reverse (5415201542), we get a palindrome (7866226687).

The spelling of 2451025145 in words is "two billion, four hundred fifty-one million, twenty-five thousand, one hundred forty-five".