722625623 has 2 divisors, whose sum is σ = 722625624. Its totient is φ = 722625622.

The previous prime is 722625601. The next prime is 722625721. The reversal of 722625623 is 326526227.

It is a weak prime.

It is an emirp because it is prime and its reverse (326526227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722625623 - 2⁸ = 722625367 is a prime.

It is a super-2 number, since 2×722625623² = 1044375582032276258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722625223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361312811 + 361312812.

It is an arithmetic number, because the mean of its divisors is an integer number (361312812).

Almost surely, 2^722625623 is an apocalyptic number.

722625623 is a deficient number, since it is larger than the sum of its proper divisors (1).

722625623 is an equidigital number, since it uses as much as digits as its factorization.

722625623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 35.

The square root of 722625623 is about 26881.6968028434. The cubic root of 722625623 is about 897.3691164732.

The spelling of 722625623 in words is "seven hundred twenty-two million, six hundred twenty-five thousand, six hundred twenty-three".