1565125530 has 32 divisors (see below), whose sum is σ = 3857825664. Its totient is φ = 406086336.

The previous prime is 1565125501. The next prime is 1565125537. The reversal of 1565125530 is 355215651.

It is a junction number, because it is equal to n+sod(n) for n = 1565125491 and 1565125500.

It is not an unprimeable number, because it can be changed into a prime (1565125537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 703902 + ... + 706121.

It is an arithmetic number, because the mean of its divisors is an integer number (120557052).

Almost surely, 2^1565125530 is an apocalyptic number.

1565125530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1565125530 is an abundant number, since it is smaller than the sum of its proper divisors (2292700134).

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

1565125530 is a wasteful number, since it uses less digits than its factorization.

1565125530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410070.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 1565125530 is about 39561.6674319979. The cubic root of 1565125530 is about 1161.0467983341.

The spelling of 1565125530 in words is "one billion, five hundred sixty-five million, one hundred twenty-five thousand, five hundred thirty".