725453771491 has 2 divisors, whose sum is σ = 725453771492. Its totient is φ = 725453771490.

The previous prime is 725453771479. The next prime is 725453771533. The reversal of 725453771491 is 194177354527.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 725453771491 - 2²⁵ = 725420217059 is a prime.

It is not a weakly prime, because it can be changed into another prime (725453771891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362726885745 + 362726885746.

It is an arithmetic number, because the mean of its divisors is an integer number (362726885746).

Almost surely, 2^725453771491 is an apocalyptic number.

725453771491 is a deficient number, since it is larger than the sum of its proper divisors (1).

725453771491 is an equidigital number, since it uses as much as digits as its factorization.

725453771491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7408800, while the sum is 55.

The spelling of 725453771491 in words is "seven hundred twenty-five billion, four hundred fifty-three million, seven hundred seventy-one thousand, four hundred ninety-one".