612725945 has 8 divisors (see below), whose sum is σ = 791830536. Its totient is φ = 452474496.

The previous prime is 612725923. The next prime is 612725947. The reversal of 612725945 is 549527216.

It can be written as a sum of positive squares in 4 ways, for example, as 3031081 + 609694864 = 1741^2 + 24692^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 612725945 - 2¹² = 612721849 is a prime.

It is a super-2 number, since 2×612725945² = 750866167352286050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612725947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4713212 + ... + 4713341.

It is an arithmetic number, because the mean of its divisors is an integer number (98978817).

Almost surely, 2^612725945 is an apocalyptic number.

612725945 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

612725945 is a deficient number, since it is larger than the sum of its proper divisors (179104591).

612725945 is a wasteful number, since it uses less digits than its factorization.

612725945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9426571.

The product of its digits is 151200, while the sum is 41.

The square root of 612725945 is about 24753.3016989653. The cubic root of 612725945 is about 849.3540397900.

The spelling of 612725945 in words is "six hundred twelve million, seven hundred twenty-five thousand, nine hundred forty-five".