130400725 has 72 divisors (see below), whose sum is σ = 210319872. Its totient is φ = 78019200.

The previous prime is 130400717. The next prime is 130400729. The reversal of 130400725 is 527004031.

130400725 = T₂₈₀ + T₂₈₁ + ... + T₉₂₉.

It is not a de Polignac number, because 130400725 - 2³ = 130400717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130400696 and 130400705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130400729) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3032554 + ... + 3032596.

Almost surely, 2^130400725 is an apocalyptic number.

It is an amenable number.

130400725 is a deficient number, since it is larger than the sum of its proper divisors (79919147).

130400725 is a wasteful number, since it uses less digits than its factorization.

130400725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 130400725 is about 11419.3136834050. The cubic root of 130400725 is about 507.0996786431.

Adding to 130400725 its reverse (527004031), we get a palindrome (657404756).

The spelling of 130400725 in words is "one hundred thirty million, four hundred thousand, seven hundred twenty-five".