1161404525 has 12 divisors (see below), whose sum is σ = 1444502784. Its totient is φ = 926310000.

The previous prime is 1161404449. The next prime is 1161404539. The reversal of 1161404525 is 5254041611.

It is not a de Polignac number, because 1161404525 - 2²² = 1157210221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61901 + ... + 78450.

It is an arithmetic number, because the mean of its divisors is an integer number (120375232).

Almost surely, 2^1161404525 is an apocalyptic number.

It is an amenable number.

1161404525 is a deficient number, since it is larger than the sum of its proper divisors (283098259).

1161404525 is a wasteful number, since it uses less digits than its factorization.

1161404525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140692 (or 140687 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1161404525 is about 34079.3856311994. The cubic root of 1161404525 is about 1051.1414721671.

The spelling of 1161404525 in words is "one billion, one hundred sixty-one million, four hundred four thousand, five hundred twenty-five".