619534281025 has 45 divisors (see below), whose sum is σ = 845689542265. Its totient is φ = 450224060000.

The previous prime is 619534281013. The next prime is 619534281049. The reversal of 619534281025 is 520182435916.

The square root of 619534281025 is 787105.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 372938611969 + 246595669056 = 610687^2 + 496584^2 .

It is not a de Polignac number, because 619534281025 - 2¹⁵ = 619534248257 is a prime.

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 44 ways as a sum of consecutive naturals, for example, 476197875 + ... + 476199175.

Almost surely, 2^619534281025 is an apocalyptic number.

619534281025 is the 787105-th square number.

619534281025 is the 393553-rd centered octagonal number.

It is an amenable number.

619534281025 is a deficient number, since it is larger than the sum of its proper divisors (226155261240).

619534281025 is an frugal number, since it uses more digits than its factorization.

619534281025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 619534281025 in words is "six hundred nineteen billion, five hundred thirty-four million, two hundred eighty-one thousand, twenty-five".