1530250725 has 24 divisors (see below), whose sum is σ = 2532293280. Its totient is φ = 815398720.

The previous prime is 1530250669. The next prime is 1530250739. The reversal of 1530250725 is 5270520351.

It is not a de Polignac number, because 1530250725 - 2⁶ = 1530250661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1530250692 and 1530250701.

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, 80431 + ... + 97619.

It is an arithmetic number, because the mean of its divisors is an integer number (105512220).

Almost surely, 2^1530250725 is an apocalyptic number.

1530250725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1530250725 is a deficient number, since it is larger than the sum of its proper divisors (1002042555).

1530250725 is a wasteful number, since it uses less digits than its factorization.

1530250725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18389 (or 18384 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 1530250725 is about 39118.4192548728. The cubic root of 1530250725 is about 1152.3582922654.

The spelling of 1530250725 in words is "one billion, five hundred thirty million, two hundred fifty thousand, seven hundred twenty-five".