130039725 has 24 divisors (see below), whose sum is σ = 216985120. Its totient is φ = 68713920.

The previous prime is 130039691. The next prime is 130039729. The reversal of 130039725 is 527930031.

It is not a de Polignac number, because 130039725 - 2⁷ = 130039597 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 130039692 and 130039701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130039729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222 + ... + 16128.

Almost surely, 2^130039725 is an apocalyptic number.

130039725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130039725 is a deficient number, since it is larger than the sum of its proper divisors (86945395).

130039725 is a wasteful number, since it uses less digits than its factorization.

130039725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16029 (or 16024 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 130039725 is about 11403.4961744195. The cubic root of 130039725 is about 506.6312963440.

Adding to 130039725 its reverse (527930031), we get a palindrome (657969756).

The spelling of 130039725 in words is "one hundred thirty million, thirty-nine thousand, seven hundred twenty-five".