1030125857 has 2 divisors, whose sum is σ = 1030125858. Its totient is φ = 1030125856.

The previous prime is 1030125823. The next prime is 1030125919. The reversal of 1030125857 is 7585210301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 994077841 + 36048016 = 31529^2 + 6004^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030125857 - 2²² = 1025931553 is a prime.

It is a super-2 number, since 2×1030125857² = 2122318562519968898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1030121857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515062928 + 515062929.

It is an arithmetic number, because the mean of its divisors is an integer number (515062929).

Almost surely, 2^1030125857 is an apocalyptic number.

It is an amenable number.

1030125857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030125857 is an equidigital number, since it uses as much as digits as its factorization.

1030125857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1030125857 is about 32095.5737914124. The cubic root of 1030125857 is about 1009.9427660931.

The spelling of 1030125857 in words is "one billion, thirty million, one hundred twenty-five thousand, eight hundred fifty-seven".