7421725747 has 2 divisors, whose sum is σ = 7421725748. Its totient is φ = 7421725746.

The previous prime is 7421725723. The next prime is 7421725763. The reversal of 7421725747 is 7475271247.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7421725747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7421725697 and 7421725706.

It is not a weakly prime, because it can be changed into another prime (7421725447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710862873 + 3710862874.

It is an arithmetic number, because the mean of its divisors is an integer number (3710862874).

Almost surely, 2^7421725747 is an apocalyptic number.

7421725747 is a deficient number, since it is larger than the sum of its proper divisors (1).

7421725747 is an equidigital number, since it uses as much as digits as its factorization.

7421725747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768320, while the sum is 46.

The square root of 7421725747 is about 86149.4384601548. The cubic root of 7421725747 is about 1950.6003627645.

The spelling of 7421725747 in words is "seven billion, four hundred twenty-one million, seven hundred twenty-five thousand, seven hundred forty-seven".