1525531040 has 192 divisors, whose sum is σ = 4230672768. Its totient is φ = 513638400.

The previous prime is 1525531037. The next prime is 1525531079. The reversal of 1525531040 is 401355251.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2004260 + ... + 2005020.

It is an arithmetic number, because the mean of its divisors is an integer number (22034754).

Almost surely, 2^1525531040 is an apocalyptic number.

1525531040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1525531040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2115336384).

1525531040 is an abundant number, since it is smaller than the sum of its proper divisors (2705141728).

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

1525531040 is a wasteful number, since it uses less digits than its factorization.

1525531040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1525531040 is about 39058.0470581928. The cubic root of 1525531040 is about 1151.1723495141.

Adding to 1525531040 its reverse (401355251), we get a palindrome (1926886291).

The spelling of 1525531040 in words is "one billion, five hundred twenty-five million, five hundred thirty-one thousand, forty".