1025360981 has 2 divisors, whose sum is σ = 1025360982. Its totient is φ = 1025360980.

The previous prime is 1025360971. The next prime is 1025361013. The reversal of 1025360981 is 1890635201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545969956 + 479391025 = 23366^2 + 21895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025360981 - 2¹⁰ = 1025359957 is a prime.

It is a super-2 number, since 2×1025360981² = 2102730282714564722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025360911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512680490 + 512680491.

It is an arithmetic number, because the mean of its divisors is an integer number (512680491).

Almost surely, 2^1025360981 is an apocalyptic number.

It is an amenable number.

1025360981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025360981 is an equidigital number, since it uses as much as digits as its factorization.

1025360981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1025360981 is about 32021.2582669701. The cubic root of 1025360981 is about 1008.3831861395.

The spelling of 1025360981 in words is "one billion, twenty-five million, three hundred sixty thousand, nine hundred eighty-one".