75025530 has 24 divisors (see below), whose sum is σ = 195066612. Its totient is φ = 20006784.

The previous prime is 75025519. The next prime is 75025541. The reversal of 75025530 is 3552057.

It is an interprime number because it is at equal distance from previous prime (75025519) and next prime (75025541).

It can be written as a sum of positive squares in 2 ways, for example, as 72029169 + 2996361 = 8487^2 + 1731^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75025494 and 75025503.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 416719 + ... + 416898.

Almost surely, 2^75025530 is an apocalyptic number.

75025530 is an abundant number, since it is smaller than the sum of its proper divisors (120041082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75025530 is a wasteful number, since it uses less digits than its factorization.

75025530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833630 (or 833627 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 75025530 is about 8661.7278876677. The cubic root of 75025530 is about 421.7641779690.

Adding to 75025530 its reverse (3552057), we get a palindrome (78577587).

The spelling of 75025530 in words is "seventy-five million, twenty-five thousand, five hundred thirty".