1725560381 has 2 divisors, whose sum is σ = 1725560382. Its totient is φ = 1725560380.

The previous prime is 1725560377. The next prime is 1725560383. The reversal of 1725560381 is 1830655271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1262665156 + 462895225 = 35534^2 + 21515^2 .

It is a cyclic number.

It is not a de Polignac number, because 1725560381 - 2² = 1725560377 is a prime.

It is a super-2 number, since 2×1725560381² = 5955117256953730322, which contains 22 as substring.

Together with 1725560383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1725560383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 862780190 + 862780191.

It is an arithmetic number, because the mean of its divisors is an integer number (862780191).

Almost surely, 2^1725560381 is an apocalyptic number.

It is an amenable number.

1725560381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1725560381 is an equidigital number, since it uses as much as digits as its factorization.

1725560381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 1725560381 is about 41539.8649612634. The cubic root of 1725560381 is about 1199.4350074075.

The spelling of 1725560381 in words is "one billion, seven hundred twenty-five million, five hundred sixty thousand, three hundred eighty-one".