7425544251 has 4 divisors (see below), whose sum is σ = 9900725672. Its totient is φ = 4950362832.

The previous prime is 7425544211. The next prime is 7425544349. The reversal of 7425544251 is 1524455247.

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

It is not a de Polignac number, because 7425544251 - 2⁶ = 7425544187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7425544211) by changing a digit.

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, 1237590706 + ... + 1237590711.

It is an arithmetic number, because the mean of its divisors is an integer number (2475181418).

Almost surely, 2^7425544251 is an apocalyptic number.

7425544251 is a deficient number, since it is larger than the sum of its proper divisors (2475181421).

7425544251 is a wasteful number, since it uses less digits than its factorization.

7425544251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475181420.

The product of its digits is 224000, while the sum is 39.

The square root of 7425544251 is about 86171.5977048122. The cubic root of 7425544251 is about 1950.9348356576.

Adding to 7425544251 its reverse (1524455247), we get a palindrome (8949999498).

The spelling of 7425544251 in words is "seven billion, four hundred twenty-five million, five hundred forty-four thousand, two hundred fifty-one".