5781557825 has 12 divisors (see below), whose sum is σ = 7170074940. Its totient is φ = 4624637760.

The previous prime is 5781557807. The next prime is 5781557851. The reversal of 5781557825 is 5287551875.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 160757041 + 5620800784 = 12679^2 + 74972^2 .

It is not a de Polignac number, because 5781557825 - 2²⁸ = 5513122369 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 362111 + ... + 377739.

It is an arithmetic number, because the mean of its divisors is an integer number (597506245).

Almost surely, 2^5781557825 is an apocalyptic number.

It is an amenable number.

5781557825 is a deficient number, since it is larger than the sum of its proper divisors (1388517115).

5781557825 is a wasteful number, since it uses less digits than its factorization.

5781557825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30436 (or 30431 counting only the distinct ones).

The product of its digits is 3920000, while the sum is 53.

The square root of 5781557825 is about 76036.5558465137. Note that the first 3 decimals coincide. The cubic root of 5781557825 is about 1794.7954417567.

The spelling of 5781557825 in words is "five billion, seven hundred eighty-one million, five hundred fifty-seven thousand, eight hundred twenty-five".