1200541525 has 12 divisors (see below), whose sum is σ = 1492510500. Its totient is φ = 957956480.

The previous prime is 1200541523. The next prime is 1200541571. The reversal of 1200541525 is 5251450021.

It can be written as a sum of positive squares in 6 ways, for example, as 58033924 + 1142507601 = 7618^2 + 33801^2 .

It is not a de Polignac number, because 1200541525 - 2¹ = 1200541523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1200541525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200541523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52000 + ... + 71449.

It is an arithmetic number, because the mean of its divisors is an integer number (124375875).

Almost surely, 2^1200541525 is an apocalyptic number.

It is an amenable number.

1200541525 is a deficient number, since it is larger than the sum of its proper divisors (291968975).

1200541525 is a wasteful number, since it uses less digits than its factorization.

1200541525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123848 (or 123843 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1200541525 is about 34648.8315098792. The cubic root of 1200541525 is about 1062.8183940829.

Adding to 1200541525 its reverse (5251450021), we get a palindrome (6451991546).

The spelling of 1200541525 in words is "one billion, two hundred million, five hundred forty-one thousand, five hundred twenty-five".