130405025 has 48 divisors (see below), whose sum is σ = 176774400. Its totient is φ = 95208960.

The previous prime is 130405021. The next prime is 130405027. The reversal of 130405025 is 520504031.

It is not a de Polignac number, because 130405025 - 2² = 130405021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130404988 and 130405006.

It is not an unprimeable number, because it can be changed into a prime (130405021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1465181 + ... + 1465269.

It is an arithmetic number, because the mean of its divisors is an integer number (3682800).

Almost surely, 2^130405025 is an apocalyptic number.

It is an amenable number.

130405025 is a deficient number, since it is larger than the sum of its proper divisors (46369375).

130405025 is a wasteful number, since it uses less digits than its factorization.

130405025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 130405025 is about 11419.5019593676. The cubic root of 130405025 is about 507.1052524993.

Adding to 130405025 its reverse (520504031), we get a palindrome (650909056).

The spelling of 130405025 in words is "one hundred thirty million, four hundred five thousand, twenty-five".