1725380401 has 2 divisors, whose sum is σ = 1725380402. Its totient is φ = 1725380400.

The previous prime is 1725380399. The next prime is 1725380429. The reversal of 1725380401 is 1040835271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1368926001 + 356454400 = 36999^2 + 18880^2 .

It is a cyclic number.

It is not a de Polignac number, because 1725380401 - 2¹ = 1725380399 is a prime.

Together with 1725380399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1725380431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 862690200 + 862690201.

It is an arithmetic number, because the mean of its divisors is an integer number (862690201).

Almost surely, 2^1725380401 is an apocalyptic number.

It is an amenable number.

1725380401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1725380401 is an equidigital number, since it uses as much as digits as its factorization.

1725380401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1725380401 is about 41537.6985520382. The cubic root of 1725380401 is about 1199.3933046616.

The spelling of 1725380401 in words is "one billion, seven hundred twenty-five million, three hundred eighty thousand, four hundred one".