1565425415 has 16 divisors (see below), whose sum is σ = 1948035648. Its totient is φ = 1206648576.

The previous prime is 1565425397. The next prime is 1565425483. The reversal of 1565425415 is 5145245651.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1565425415 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 22022 + ... + 60131.

It is an arithmetic number, because the mean of its divisors is an integer number (121752228).

Almost surely, 2^1565425415 is an apocalyptic number.

1565425415 is a deficient number, since it is larger than the sum of its proper divisors (382610233).

1565425415 is a wasteful number, since it uses less digits than its factorization.

1565425415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82298.

The product of its digits is 120000, while the sum is 38.

The square root of 1565425415 is about 39565.4573460234. The cubic root of 1565425415 is about 1161.1209475055.

The spelling of 1565425415 in words is "one billion, five hundred sixty-five million, four hundred twenty-five thousand, four hundred fifteen".