725535091 has 2 divisors, whose sum is σ = 725535092. Its totient is φ = 725535090.

The previous prime is 725535077. The next prime is 725535127. The reversal of 725535091 is 190535527.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 725535091 - 2¹³ = 725526899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 725535091.

It is not a weakly prime, because it can be changed into another prime (725535011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362767545 + 362767546.

It is an arithmetic number, because the mean of its divisors is an integer number (362767546).

Almost surely, 2^725535091 is an apocalyptic number.

725535091 is a deficient number, since it is larger than the sum of its proper divisors (1).

725535091 is an equidigital number, since it uses as much as digits as its factorization.

725535091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47250, while the sum is 37.

The square root of 725535091 is about 26935.7585933643. The cubic root of 725535091 is about 898.5718464741.

The spelling of 725535091 in words is "seven hundred twenty-five million, five hundred thirty-five thousand, ninety-one".