1725538881 has 8 divisors (see below), whose sum is σ = 2509874784. Its totient is φ = 1045781120.

The previous prime is 1725538877. The next prime is 1725538891. The reversal of 1725538881 is 1888355271.

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 1725538881 - 2² = 1725538877 is a prime.

It is a super-2 number, since 2×1725538881² = 5954968859685464322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1725538881.

It is not an unprimeable number, because it can be changed into a prime (1725538891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26144496 + ... + 26144561.

It is an arithmetic number, because the mean of its divisors is an integer number (313734348).

Almost surely, 2^1725538881 is an apocalyptic number.

1725538881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1725538881 is a deficient number, since it is larger than the sum of its proper divisors (784335903).

1725538881 is a wasteful number, since it uses less digits than its factorization.

1725538881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52289071.

The product of its digits is 537600, while the sum is 48.

The square root of 1725538881 is about 41539.6061729044. The cubic root of 1725538881 is about 1199.4300258452.

The spelling of 1725538881 in words is "one billion, seven hundred twenty-five million, five hundred thirty-eight thousand, eight hundred eighty-one".