1377525073 has 4 divisors (see below), whose sum is σ = 1379560500. Its totient is φ = 1375489648.

The previous prime is 1377525047. The next prime is 1377525089. The reversal of 1377525073 is 3705257731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1347844369 + 29680704 = 36713^2 + 5448^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377525073 - 2¹⁷ = 1377394001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1377525013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016698 + ... + 1018051.

It is an arithmetic number, because the mean of its divisors is an integer number (344890125).

Almost surely, 2^1377525073 is an apocalyptic number.

It is an amenable number.

1377525073 is a deficient number, since it is larger than the sum of its proper divisors (2035427).

1377525073 is an equidigital number, since it uses as much as digits as its factorization.

1377525073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035426.

The product of its (nonzero) digits is 154350, while the sum is 40.

The square root of 1377525073 is about 37115.0248955864. The cubic root of 1377525073 is about 1112.6703214042.

The spelling of 1377525073 in words is "one billion, three hundred seventy-seven million, five hundred twenty-five thousand, seventy-three".