612378625 has 8 divisors (see below), whose sum is σ = 764248680. Its totient is φ = 489902800.

The previous prime is 612378623. The next prime is 612378643. The reversal of 612378625 is 526873216.

It can be written as a sum of positive squares in 4 ways, for example, as 147889921 + 464488704 = 12161^2 + 21552^2 .

It is not a de Polignac number, because 612378625 - 2¹ = 612378623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (612378623) 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, 2449390 + ... + 2449639.

It is an arithmetic number, because the mean of its divisors is an integer number (95531085).

Almost surely, 2^612378625 is an apocalyptic number.

It is an amenable number.

612378625 is a deficient number, since it is larger than the sum of its proper divisors (151870055).

612378625 is an equidigital number, since it uses as much as digits as its factorization.

612378625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4899044 (or 4899034 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 612378625 is about 24746.2850747339. The cubic root of 612378625 is about 849.1935257221.

It can be divided in two parts, 6123 and 78625, that added together give a palindrome (84748).

The spelling of 612378625 in words is "six hundred twelve million, three hundred seventy-eight thousand, six hundred twenty-five".