725872130 has 24 divisors (see below), whose sum is σ = 1350094716. Its totient is φ = 280979040.

The previous prime is 725872127. The next prime is 725872139. The reversal of 725872130 is 31278527.

It can be written as a sum of positive squares in 2 ways, for example, as 725709721 + 162409 = 26939^2 + 403^2 .

It is a super-2 number, since 2×725872130² = 1053780698221473800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (725872139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28157 + ... + 47376.

Almost surely, 2^725872130 is an apocalyptic number.

725872130 is a deficient number, since it is larger than the sum of its proper divisors (624222586).

725872130 is a wasteful number, since it uses less digits than its factorization.

725872130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75602 (or 75571 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 725872130 is about 26942.0142157189. The cubic root of 725872130 is about 898.7109653473.

The spelling of 725872130 in words is "seven hundred twenty-five million, eight hundred seventy-two thousand, one hundred thirty".