613120525 has 12 divisors (see below), whose sum is σ = 780818452. Its totient is φ = 477239040.

The previous prime is 613120517. The next prime is 613120549. The reversal of 613120525 is 525021316.

It can be written as a sum of positive squares in 6 ways, for example, as 24621444 + 588499081 = 4962^2 + 24259^2 .

It is not a de Polignac number, because 613120525 - 2³ = 613120517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 613120525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330492 + ... + 332341.

Almost surely, 2^613120525 is an apocalyptic number.

It is an amenable number.

613120525 is a deficient number, since it is larger than the sum of its proper divisors (167697927).

613120525 is a wasteful number, since it uses less digits than its factorization.

613120525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662880 (or 662875 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 613120525 is about 24761.2706661027. The cubic root of 613120525 is about 849.5363215019.

The spelling of 613120525 in words is "six hundred thirteen million, one hundred twenty thousand, five hundred twenty-five".