1201525115 has 32 divisors (see below), whose sum is σ = 1664409600. Its totient is φ = 815652864.

The previous prime is 1201525111. The next prime is 1201525139. The reversal of 1201525115 is 5115251021.

It is a cyclic number.

It is not a de Polignac number, because 1201525115 - 2² = 1201525111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201525111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2005586 + ... + 2006184.

It is an arithmetic number, because the mean of its divisors is an integer number (52012800).

Almost surely, 2^1201525115 is an apocalyptic number.

1201525115 is a deficient number, since it is larger than the sum of its proper divisors (462884485).

1201525115 is a wasteful number, since it uses less digits than its factorization.

1201525115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091.

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 1201525115 is about 34663.0223004284. The cubic root of 1201525115 is about 1063.1085665214.

Adding to 1201525115 its reverse (5115251021), we get a palindrome (6316776136).

The spelling of 1201525115 in words is "one billion, two hundred one million, five hundred twenty-five thousand, one hundred fifteen".