613449725 has 36 divisors (see below), whose sum is σ = 882345312. Its totient is φ = 414417600.

The previous prime is 613449703. The next prime is 613449737. The reversal of 613449725 is 527944316.

613449725 = T₄₆ + T₄₇ + ... + T₁₅₄₃.

It is not a de Polignac number, because 613449725 - 2⁸ = 613449469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3389135 + ... + 3389315.

It is an arithmetic number, because the mean of its divisors is an integer number (24509592).

Almost surely, 2^613449725 is an apocalyptic number.

It is an amenable number.

613449725 is a deficient number, since it is larger than the sum of its proper divisors (268895587).

613449725 is a wasteful number, since it uses less digits than its factorization.

613449725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 300 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 613449725 is about 24767.9172519613. The cubic root of 613449725 is about 849.6883401818.

The spelling of 613449725 in words is "six hundred thirteen million, four hundred forty-nine thousand, seven hundred twenty-five".