15125530 has 32 divisors (see below), whose sum is σ = 32192640. Its totient is φ = 5006400.

The previous prime is 15125521. The next prime is 15125533. The reversal of 15125530 is 3552151.

15125530 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

15125530 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (15125533) 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, 1696 + ... + 5755.

It is an arithmetic number, because the mean of its divisors is an integer number (1006020).

Almost surely, 2^15125530 is an apocalyptic number.

15125530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15125530 is an abundant number, since it is smaller than the sum of its proper divisors (17067110).

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

15125530 is a wasteful number, since it uses less digits than its factorization.

15125530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7494.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 15125530 is about 3889.1554353098. The cubic root of 15125530 is about 247.3072607528.

Adding to 15125530 its reverse (3552151), we get a palindrome (18677681).

The spelling of 15125530 in words is "fifteen million, one hundred twenty-five thousand, five hundred thirty".