1625364505 has 16 divisors (see below), whose sum is σ = 1961768448. Its totient is φ = 1292760000.

The previous prime is 1625364497. The next prime is 1625364511. The reversal of 1625364505 is 5054635261.

1625364505 = 346² + 347² + ... + 1700².

It is not a de Polignac number, because 1625364505 - 2³ = 1625364497 is a prime.

It is a super-2 number, since 2×1625364505² = 5283619548227790050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 854055 + ... + 855955.

It is an arithmetic number, because the mean of its divisors is an integer number (122610528).

Almost surely, 2^1625364505 is an apocalyptic number.

It is an amenable number.

1625364505 is a deficient number, since it is larger than the sum of its proper divisors (336403943).

1625364505 is a wasteful number, since it uses less digits than its factorization.

1625364505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 1625364505 is about 40315.8096160799. The cubic root of 1625364505 is about 1175.7552422373.

Adding to 1625364505 its reverse (5054635261), we get a palindrome (6679999766).

The spelling of 1625364505 in words is "one billion, six hundred twenty-five million, three hundred sixty-four thousand, five hundred five".