1525113665 has 16 divisors (see below), whose sum is σ = 1897466880. Its totient is φ = 1175549760.

The previous prime is 1525113661. The next prime is 1525113671. The reversal of 1525113665 is 5663115251.

It is not a de Polignac number, because 1525113665 - 2² = 1525113661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1525113661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14012 + ... + 56978.

It is an arithmetic number, because the mean of its divisors is an integer number (118591680).

Almost surely, 2^1525113665 is an apocalyptic number.

It is an amenable number.

1525113665 is a deficient number, since it is larger than the sum of its proper divisors (372353215).

1525113665 is a wasteful number, since it uses less digits than its factorization.

1525113665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43232.

The product of its digits is 27000, while the sum is 35.

The square root of 1525113665 is about 39052.7036836120. The cubic root of 1525113665 is about 1151.0673556089.

The spelling of 1525113665 in words is "one billion, five hundred twenty-five million, one hundred thirteen thousand, six hundred sixty-five".