2145525767 has 16 divisors (see below), whose sum is σ = 2791245312. Its totient is φ = 1599148320.

The previous prime is 2145525761. The next prime is 2145525769. The reversal of 2145525767 is 7675255412.

It is not a de Polignac number, because 2145525767 - 2⁴ = 2145525751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145525761) 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, 603968 + ... + 607509.

It is an arithmetic number, because the mean of its divisors is an integer number (174452832).

Almost surely, 2^2145525767 is an apocalyptic number.

2145525767 is a deficient number, since it is larger than the sum of its proper divisors (645719545).

2145525767 is a wasteful number, since it uses less digits than its factorization.

2145525767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211518.

The product of its digits is 588000, while the sum is 44.

The square root of 2145525767 is about 46319.8204551788. The cubic root of 2145525767 is about 1289.7669524725.

The spelling of 2145525767 in words is "two billion, one hundred forty-five million, five hundred twenty-five thousand, seven hundred sixty-seven".