722530125 has 72 divisors (see below), whose sum is σ = 1354042872. Its totient is φ = 384912000.

The previous prime is 722530103. The next prime is 722530183. The reversal of 722530125 is 521035227.

722530125 is a `hidden beast` number, since 7 + 2 + 2 + 530 + 125 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 104162436 + 618367689 = 10206^2 + 24867^2 .

It is not a de Polignac number, because 722530125 - 2⁵ = 722530093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 819685 + ... + 820565.

It is an arithmetic number, because the mean of its divisors is an integer number (18806151).

Almost surely, 2^722530125 is an apocalyptic number.

722530125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

722530125 is a deficient number, since it is larger than the sum of its proper divisors (631512747).

722530125 is an frugal number, since it uses more digits than its factorization.

722530125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 722530125 is about 26879.9204797931. The cubic root of 722530125 is about 897.3295843704.

The spelling of 722530125 in words is "seven hundred twenty-two million, five hundred thirty thousand, one hundred twenty-five".