613400625 has 30 divisors (see below), whose sum is σ = 1107184650. Its totient is φ = 327144000.

The previous prime is 613400609. The next prime is 613400629. The reversal of 613400625 is 526004316.

613400625 is a `hidden beast` number, since 6 + 1 + 34 + 0 + 0 + 625 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 468246321 + 145154304 = 21639^2 + 12048^2 .

It is not a de Polignac number, because 613400625 - 2⁴ = 613400609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (613400629) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 48900 + ... + 60149.

It is an arithmetic number, because the mean of its divisors is an integer number (36906155).

Almost surely, 2^613400625 is an apocalyptic number.

It is an amenable number.

613400625 is a deficient number, since it is larger than the sum of its proper divisors (493784025).

613400625 is a wasteful number, since it uses less digits than its factorization.

613400625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109075 (or 109057 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 613400625 is about 24766.9260304948. The cubic root of 613400625 is about 849.6656701303.

The spelling of 613400625 in words is "six hundred thirteen million, four hundred thousand, six hundred twenty-five".