1201331525 has 24 divisors (see below), whose sum is σ = 1622143200. Its totient is φ = 879076800.

The previous prime is 1201331513. The next prime is 1201331533. The reversal of 1201331525 is 5251331021.

It is a happy number.

It is not a de Polignac number, because 1201331525 - 2¹⁸ = 1201069381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201331525.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 29831 + ... + 57380.

It is an arithmetic number, because the mean of its divisors is an integer number (67589300).

Almost surely, 2^1201331525 is an apocalyptic number.

It is an amenable number.

1201331525 is a deficient number, since it is larger than the sum of its proper divisors (420811675).

1201331525 is a wasteful number, since it uses less digits than its factorization.

1201331525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87269 (or 87264 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1201331525 is about 34660.2297309178. The cubic root of 1201331525 is about 1063.0514673566.

Adding to 1201331525 its reverse (5251331021), we get a palindrome (6452662546).

The spelling of 1201331525 in words is "one billion, two hundred one million, three hundred thirty-one thousand, five hundred twenty-five".