1525079161 has 4 divisors (see below), whose sum is σ = 1525197712. Its totient is φ = 1524960612.

The previous prime is 1525079113. The next prime is 1525079183. The reversal of 1525079161 is 1619705251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1619705251 = 3137 ⋅516323.

It is a cyclic number.

It is not a de Polignac number, because 1525079161 - 2⁷ = 1525079033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1525079161.

It is not an unprimeable number, because it can be changed into a prime (1525079111) 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 3 ways as a sum of consecutive naturals, for example, 37251 + ... + 66616.

It is an arithmetic number, because the mean of its divisors is an integer number (381299428).

Almost surely, 2^1525079161 is an apocalyptic number.

It is an amenable number.

1525079161 is a deficient number, since it is larger than the sum of its proper divisors (118551).

1525079161 is a wasteful number, since it uses less digits than its factorization.

1525079161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118550.

The product of its (nonzero) digits is 18900, while the sum is 37.

The square root of 1525079161 is about 39052.2619191258. The cubic root of 1525079161 is about 1151.0586750040.

The spelling of 1525079161 in words is "one billion, five hundred twenty-five million, seventy-nine thousand, one hundred sixty-one".