613169725 has 24 divisors (see below), whose sum is σ = 874194048. Its totient is φ = 417921600.

The previous prime is 613169701. The next prime is 613169737. The reversal of 613169725 is 527961316.

It is not a de Polignac number, because 613169725 - 2¹⁷ = 613038653 is a prime.

It is a super-2 number, since 2×613169725² = 751954223313151250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18735 + ... + 39715.

It is an arithmetic number, because the mean of its divisors is an integer number (36424752).

Almost surely, 2^613169725 is an apocalyptic number.

It is an amenable number.

613169725 is a deficient number, since it is larger than the sum of its proper divisors (261024323).

613169725 is a wasteful number, since it uses less digits than its factorization.

613169725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21165 (or 21160 counting only the distinct ones).

The product of its digits is 68040, while the sum is 40.

The square root of 613169725 is about 24762.2641331523. The cubic root of 613169725 is about 849.5590446411.

The spelling of 613169725 in words is "six hundred thirteen million, one hundred sixty-nine thousand, seven hundred twenty-five".