7245261845 has 4 divisors (see below), whose sum is σ = 8694314220. Its totient is φ = 5796209472.

The previous prime is 7245261833. The next prime is 7245261847. The reversal of 7245261845 is 5481625427.

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 2323818436 + 4921443409 = 48206^2 + 70153^2 .

It is a cyclic number.

It is not a de Polignac number, because 7245261845 - 2⁸ = 7245261589 is a prime.

It is a super-2 number, since 2×7245261845² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7245261796 and 7245261805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7245261847) 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, 724526180 + ... + 724526189.

It is an arithmetic number, because the mean of its divisors is an integer number (2173578555).

Almost surely, 2^7245261845 is an apocalyptic number.

It is an amenable number.

7245261845 is a deficient number, since it is larger than the sum of its proper divisors (1449052375).

7245261845 is a wasteful number, since it uses less digits than its factorization.

7245261845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449052374.

The product of its digits is 537600, while the sum is 44.

The square root of 7245261845 is about 85119.1038780367. The cubic root of 7245261845 is about 1935.0166005337.

The spelling of 7245261845 in words is "seven billion, two hundred forty-five million, two hundred sixty-one thousand, eight hundred forty-five".