1525375290 has 64 divisors (see below), whose sum is σ = 3867891840. Its totient is φ = 383927040.

The previous prime is 1525375253. The next prime is 1525375349. The reversal of 1525375290 is 925735251.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 153060 + ... + 162720.

It is an arithmetic number, because the mean of its divisors is an integer number (60435810).

Almost surely, 2^1525375290 is an apocalyptic number.

1525375290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1525375290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1933945920).

1525375290 is an abundant number, since it is smaller than the sum of its proper divisors (2342516550).

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

1525375290 is a wasteful number, since it uses less digits than its factorization.

1525375290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9967.

The product of its (nonzero) digits is 94500, while the sum is 39.

The square root of 1525375290 is about 39056.0531800130. The cubic root of 1525375290 is about 1151.1331716386.

The spelling of 1525375290 in words is "one billion, five hundred twenty-five million, three hundred seventy-five thousand, two hundred ninety".