1525317540 has 48 divisors (see below), whose sum is σ = 4276039488. Its totient is φ = 406260864.

The previous prime is 1525317509. The next prime is 1525317557. The reversal of 1525317540 is 457135251.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36279 + ... + 66081.

It is an arithmetic number, because the mean of its divisors is an integer number (89084156).

Almost surely, 2^1525317540 is an apocalyptic number.

1525317540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1525317540 is an abundant number, since it is smaller than the sum of its proper divisors (2750721948).

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

1525317540 is a wasteful number, since it uses less digits than its factorization.

1525317540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30668 (or 30666 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 1525317540 is about 39055.3138509986. The cubic root of 1525317540 is about 1151.1186443328.

The spelling of 1525317540 in words is "one billion, five hundred twenty-five million, three hundred seventeen thousand, five hundred forty".