7725491201 has 2 divisors, whose sum is σ = 7725491202. Its totient is φ = 7725491200.

The previous prime is 7725491177. The next prime is 7725491243. The reversal of 7725491201 is 1021945277.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6304201201 + 1421290000 = 79399^2 + 37700^2 .

It is an emirp because it is prime and its reverse (1021945277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7725491201 - 2¹⁴ = 7725474817 is a prime.

It is not a weakly prime, because it can be changed into another prime (7725491401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3862745600 + 3862745601.

It is an arithmetic number, because the mean of its divisors is an integer number (3862745601).

Almost surely, 2^7725491201 is an apocalyptic number.

It is an amenable number.

7725491201 is a deficient number, since it is larger than the sum of its proper divisors (1).

7725491201 is an equidigital number, since it uses as much as digits as its factorization.

7725491201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 7725491201 is about 87894.7734566737. The cubic root of 7725491201 is about 1976.8575122582.

The spelling of 7725491201 in words is "seven billion, seven hundred twenty-five million, four hundred ninety-one thousand, two hundred one".