5254825991 has 4 divisors (see below), whose sum is σ = 5531395800. Its totient is φ = 4978256184.

The previous prime is 5254825963. The next prime is 5254825997. The reversal of 5254825991 is 1995284525.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5254825991 is a prime.

It is a super-2 number, since 2×5254825991² = 55226392391378264162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5254825997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138284876 + ... + 138284913.

It is an arithmetic number, because the mean of its divisors is an integer number (1382848950).

Almost surely, 2^5254825991 is an apocalyptic number.

5254825991 is a deficient number, since it is larger than the sum of its proper divisors (276569809).

5254825991 is a wasteful number, since it uses less digits than its factorization.

5254825991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276569808.

The product of its digits is 1296000, while the sum is 50.

The square root of 5254825991 is about 72490.1785830329. The cubic root of 5254825991 is about 1738.5457077061.

The spelling of 5254825991 in words is "five billion, two hundred fifty-four million, eight hundred twenty-five thousand, nine hundred ninety-one".