1572265745 has 8 divisors (see below), whose sum is σ = 1932736680. Its totient is φ = 1227134080.

The previous prime is 1572265733. The next prime is 1572265771. The reversal of 1572265745 is 5475622751.

It can be written as a sum of positive squares in 4 ways, for example, as 122788561 + 1449477184 = 11081^2 + 38072^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1572265745 - 2⁴ = 1572265729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1572265696 and 1572265705.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3834590 + ... + 3834999.

It is an arithmetic number, because the mean of its divisors is an integer number (241592085).

Almost surely, 2^1572265745 is an apocalyptic number.

It is an amenable number.

1572265745 is a deficient number, since it is larger than the sum of its proper divisors (360470935).

1572265745 is an equidigital number, since it uses as much as digits as its factorization.

1572265745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7669635.

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

The square root of 1572265745 is about 39651.8063270767. The cubic root of 1572265745 is about 1162.8097131393.

The spelling of 1572265745 in words is "one billion, five hundred seventy-two million, two hundred sixty-five thousand, seven hundred forty-five".