1471225681 has 2 divisors, whose sum is σ = 1471225682. Its totient is φ = 1471225680.

The previous prime is 1471225661. The next prime is 1471225697. The reversal of 1471225681 is 1865221741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1102240000 + 368985681 = 33200^2 + 19209^2 .

It is a cyclic number.

It is not a de Polignac number, because 1471225681 - 2⁵ = 1471225649 is a prime.

It is a super-2 number, since 2×1471225681² = 4329010008867827522, 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 1471225681.

It is not a weakly prime, because it can be changed into another prime (1471225661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 735612840 + 735612841.

It is an arithmetic number, because the mean of its divisors is an integer number (735612841).

Almost surely, 2^1471225681 is an apocalyptic number.

It is an amenable number.

1471225681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1471225681 is an equidigital number, since it uses as much as digits as its factorization.

1471225681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 37.

The square root of 1471225681 is about 38356.5598170639. The cubic root of 1471225681 is about 1137.3472949780.

The spelling of 1471225681 in words is "one billion, four hundred seventy-one million, two hundred twenty-five thousand, six hundred eighty-one".