725542012619 has 4 divisors (see below), whose sum is σ = 726523802280. Its totient is φ = 724560222960.

The previous prime is 725542012597. The next prime is 725542012633. The reversal of 725542012619 is 916210245527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 725542012619 - 2¹² = 725542008523 is a prime.

It is a super-2 number, since 2×725542012619² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 725542012619.

It is not an unprimeable number, because it can be changed into a prime (725542032619) 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, 490893722 + ... + 490895199.

It is an arithmetic number, because the mean of its divisors is an integer number (181630950570).

Almost surely, 2^725542012619 is an apocalyptic number.

725542012619 is a deficient number, since it is larger than the sum of its proper divisors (981789661).

725542012619 is an equidigital number, since it uses as much as digits as its factorization.

725542012619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981789660.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 725542012619 in words is "seven hundred twenty-five billion, five hundred forty-two million, twelve thousand, six hundred nineteen".