1725216408 has 56 divisors (see below), whose sum is σ = 4849968900. Its totient is φ = 575070192.

The previous prime is 1725216401. The next prime is 1725216413. The reversal of 1725216408 is 8046125271.

1725216408 is a `hidden beast` number, since 1 + 7 + 2 + 5 + 2 + 1 + 640 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1725216401) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 142078 + ... + 153741.

Almost surely, 2^1725216408 is an apocalyptic number.

1725216408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1725216408 is an abundant number, since it is smaller than the sum of its proper divisors (3124752492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1725216408 is an equidigital number, since it uses as much as digits as its factorization.

1725216408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295843 (or 295824 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1725216408 is about 41535.7244790554. The cubic root of 1725216408 is about 1199.3553037009.

It can be divided in two parts, 172521 and 6408, that added together give a square (178929 = 423²).

The spelling of 1725216408 in words is "one billion, seven hundred twenty-five million, two hundred sixteen thousand, four hundred eight".