1025995957 has 6 divisors (see below), whose sum is σ = 1193505558. Its totient is φ = 879425064.

The previous prime is 1025995909. The next prime is 1025995967. The reversal of 1025995957 is 7595995201.

It can be written as a sum of positive squares in only one way, i.e., 915304516 + 110691441 = 30254^2 + 10521^2 .

It is not a de Polignac number, because 1025995957 - 2²⁷ = 891778229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025995967) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10469298 + ... + 10469395.

It is an arithmetic number, because the mean of its divisors is an integer number (198917593).

Almost surely, 2^1025995957 is an apocalyptic number.

It is an amenable number.

1025995957 is a deficient number, since it is larger than the sum of its proper divisors (167509601).

1025995957 is an equidigital number, since it uses as much as digits as its factorization.

1025995957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20938707 (or 20938700 counting only the distinct ones).

The product of its (nonzero) digits is 1275750, while the sum is 52.

The square root of 1025995957 is about 32031.1716457578. The cubic root of 1025995957 is about 1008.5912972361.

The spelling of 1025995957 in words is "one billion, twenty-five million, nine hundred ninety-five thousand, nine hundred fifty-seven".