613400125 has 16 divisors (see below), whose sum is σ = 824411952. Its totient is φ = 452971200.

The previous prime is 613400089. The next prime is 613400143. The reversal of 613400125 is 521004316.

It can be written as a sum of positive squares in 8 ways, for example, as 320374201 + 293025924 = 17899^2 + 17118^2 .

It is not a de Polignac number, because 613400125 - 2⁹ = 613399613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 613400096 and 613400105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187114 + ... + 190363.

It is an arithmetic number, because the mean of its divisors is an integer number (51525747).

Almost surely, 2^613400125 is an apocalyptic number.

613400125 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

613400125 is a deficient number, since it is larger than the sum of its proper divisors (211011827).

613400125 is a wasteful number, since it uses less digits than its factorization.

613400125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377505 (or 377495 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 613400125 is about 24766.9159363858. The cubic root of 613400125 is about 849.6654392681.

The spelling of 613400125 in words is "six hundred thirteen million, four hundred thousand, one hundred twenty-five".