1525605252 has 12 divisors (see below), whose sum is σ = 3559745616. Its totient is φ = 508535080.

The previous prime is 1525605241. The next prime is 1525605253. The reversal of 1525605252 is 2525065251.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1525605253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63566874 + ... + 63566897.

It is an arithmetic number, because the mean of its divisors is an integer number (296645468).

Almost surely, 2^1525605252 is an apocalyptic number.

1525605252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1525605252 is an abundant number, since it is smaller than the sum of its proper divisors (2034140364).

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

1525605252 is a wasteful number, since it uses less digits than its factorization.

1525605252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127133778 (or 127133776 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 1525605252 is about 39058.9970685372. The cubic root of 1525605252 is about 1151.1910161106.

The spelling of 1525605252 in words is "one billion, five hundred twenty-five million, six hundred five thousand, two hundred fifty-two".