5225139945 has 24 divisors (see below), whose sum is σ = 9096477000. Its totient is φ = 2774566656.

The previous prime is 5225139943. The next prime is 5225139947. The reversal of 5225139945 is 5499315225.

5225139945 is a `hidden beast` number, since 5 + 2 + 2 + 513 + 99 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (5225139943) and next prime (5225139947).

It can be written as a sum of positive squares in 4 ways, for example, as 198471744 + 5026668201 = 14088^2 + 70899^2 .

It is not a de Polignac number, because 5225139945 - 2¹ = 5225139943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 5225139945.

It is not an unprimeable number, because it can be changed into a prime (5225139943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243220 + ... + 263829.

It is an arithmetic number, because the mean of its divisors is an integer number (379019875).

Almost surely, 2^5225139945 is an apocalyptic number.

It is an amenable number.

5225139945 is a deficient number, since it is larger than the sum of its proper divisors (3871337055).

5225139945 is a wasteful number, since it uses less digits than its factorization.

5225139945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507289 (or 507286 counting only the distinct ones).

The product of its digits is 486000, while the sum is 45.

The square root of 5225139945 is about 72285.1294873295. The cubic root of 5225139945 is about 1735.2656725663.

The spelling of 5225139945 in words is "five billion, two hundred twenty-five million, one hundred thirty-nine thousand, nine hundred forty-five".