1565056025 has 24 divisors (see below), whose sum is σ = 2091991104. Its totient is φ = 1154606400.

The previous prime is 1565056001. The next prime is 1565056043. The reversal of 1565056025 is 5206505651.

It is not a de Polignac number, because 1565056025 - 2²² = 1560861721 is a prime.

It is a super-2 number, since 2×1565056025² = 4898800722777601250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 489482 + ... + 492668.

It is an arithmetic number, because the mean of its divisors is an integer number (87166296).

Almost surely, 2^1565056025 is an apocalyptic number.

It is an amenable number.

1565056025 is a deficient number, since it is larger than the sum of its proper divisors (526935079).

1565056025 is a wasteful number, since it uses less digits than its factorization.

1565056025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721 (or 4716 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 1565056025 is about 39560.7889835377. The cubic root of 1565056025 is about 1161.0296112670.

The spelling of 1565056025 in words is "one billion, five hundred sixty-five million, fifty-six thousand, twenty-five".