1625553065 has 8 divisors (see below), whose sum is σ = 1959183240. Its totient is φ = 1294762752.

The previous prime is 1625553053. The next prime is 1625553101. The reversal of 1625553065 is 5603555261.

It can be written as a sum of positive squares in 4 ways, for example, as 62220544 + 1563332521 = 7888^2 + 39539^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1625553065 - 2¹⁶ = 1625487529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 708704 + ... + 710993.

It is an arithmetic number, because the mean of its divisors is an integer number (244897905).

Almost surely, 2^1625553065 is an apocalyptic number.

It is an amenable number.

1625553065 is a deficient number, since it is larger than the sum of its proper divisors (333630175).

1625553065 is a wasteful number, since it uses less digits than its factorization.

1625553065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419931.

The product of its (nonzero) digits is 135000, while the sum is 38.

The square root of 1625553065 is about 40318.1480849505. The cubic root of 1625553065 is about 1175.8007072873.

The spelling of 1625553065 in words is "one billion, six hundred twenty-five million, five hundred fifty-three thousand, sixty-five".