1525001001 has 8 divisors (see below), whose sum is σ = 2036134464. Its totient is φ = 1015267440.

The previous prime is 1525000973. The next prime is 1525001033. The reversal of 1525001001 is 1001005251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1525001001 - 2⁵ = 1525000969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1525001041) 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 7 ways as a sum of consecutive naturals, for example, 347430 + ... + 351791.

It is an arithmetic number, because the mean of its divisors is an integer number (254516808).

Almost surely, 2^1525001001 is an apocalyptic number.

It is an amenable number.

1525001001 is a deficient number, since it is larger than the sum of its proper divisors (511133463).

1525001001 is an equidigital number, since it uses as much as digits as its factorization.

1525001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699951.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1525001001 is about 39051.2611960229. The cubic root of 1525001001 is about 1151.0390108263.

Adding to 1525001001 its reverse (1001005251), we get a palindrome (2526006252).

The spelling of 1525001001 in words is "one billion, five hundred twenty-five million, one thousand, one".