7541725545 has 24 divisors (see below), whose sum is σ = 13286629512. Its totient is φ = 3956313600.

The previous prime is 7541725469. The next prime is 7541725559. The reversal of 7541725545 is 5455271457.

7541725545 is a `hidden beast` number, since 75 + 4 + 17 + 25 + 545 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1929321 + 7539796224 = 1389^2 + 86832^2 .

It is not a de Polignac number, because 7541725545 - 2⁷ = 7541725417 is a prime.

It is a super-2 number, since 2×7541725545² (a number of 21 digits) contains 22 as substring.

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 7541725545.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1370976 + ... + 1376465.

It is an arithmetic number, because the mean of its divisors is an integer number (553609563).

Almost surely, 2^7541725545 is an apocalyptic number.

It is an amenable number.

7541725545 is a deficient number, since it is larger than the sum of its proper divisors (5744903967).

7541725545 is a wasteful number, since it uses less digits than its factorization.

7541725545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747513 (or 2747510 counting only the distinct ones).

The product of its digits is 980000, while the sum is 45.

The square root of 7541725545 is about 86843.1087939625. The cubic root of 7541725545 is about 1961.0571092805.

The spelling of 7541725545 in words is "seven billion, five hundred forty-one million, seven hundred twenty-five thousand, five hundred forty-five".