1011025129 has 2 divisors, whose sum is σ = 1011025130. Its totient is φ = 1011025128.

The previous prime is 1011025097. The next prime is 1011025157. The reversal of 1011025129 is 9215201101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 895505625 + 115519504 = 29925^2 + 10748^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011025129 - 2⁵ = 1011025097 is a prime.

It is a super-2 number, since 2×1011025129² = 2044343622938933282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1011025229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505512564 + 505512565.

It is an arithmetic number, because the mean of its divisors is an integer number (505512565).

Almost surely, 2^1011025129 is an apocalyptic number.

It is an amenable number.

1011025129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011025129 is an equidigital number, since it uses as much as digits as its factorization.

1011025129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 1011025129 is about 31796.6213456713. The cubic root of 1011025129 is about 1003.6616191806.

The spelling of 1011025129 in words is "one billion, eleven million, twenty-five thousand, one hundred twenty-nine".