722542465 has 4 divisors (see below), whose sum is σ = 867050964. Its totient is φ = 578033968.

The previous prime is 722542423. The next prime is 722542477. The reversal of 722542465 is 564245227.

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

It can be written as a sum of positive squares in 2 ways, for example, as 467597376 + 254945089 = 21624^2 + 15967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722542465 is a prime.

It is a super-2 number, since 2×722542465² = 1044135227456552450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72254242 + ... + 72254251.

It is an arithmetic number, because the mean of its divisors is an integer number (216762741).

Almost surely, 2^722542465 is an apocalyptic number.

It is an amenable number.

722542465 is a deficient number, since it is larger than the sum of its proper divisors (144508499).

722542465 is a wasteful number, since it uses less digits than its factorization.

722542465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144508498.

The product of its digits is 134400, while the sum is 37.

The square root of 722542465 is about 26880.1500181826. The cubic root of 722542465 is about 897.3346928005.

The spelling of 722542465 in words is "seven hundred twenty-two million, five hundred forty-two thousand, four hundred sixty-five".