1290127925 has 24 divisors (see below), whose sum is σ = 1664789280. Its totient is φ = 990964800.

The previous prime is 1290127903. The next prime is 1290127967. The reversal of 1290127925 is 5297210921.

It is not a de Polignac number, because 1290127925 - 2¹⁴ = 1290111541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53255 + ... + 73595.

It is an arithmetic number, because the mean of its divisors is an integer number (69366220).

Almost surely, 2^1290127925 is an apocalyptic number.

It is an amenable number.

1290127925 is a deficient number, since it is larger than the sum of its proper divisors (374661355).

1290127925 is a wasteful number, since it uses less digits than its factorization.

1290127925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20453 (or 20448 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 1290127925 is about 35918.3508112497. The cubic root of 1290127925 is about 1088.6232161193.

The spelling of 1290127925 in words is "one billion, two hundred ninety million, one hundred twenty-seven thousand, nine hundred twenty-five".