1375025287 has 2 divisors, whose sum is σ = 1375025288. Its totient is φ = 1375025286.

The previous prime is 1375025251. The next prime is 1375025303. The reversal of 1375025287 is 7825205731.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1375025287 - 2¹¹ = 1375023239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1375025237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687512643 + 687512644.

It is an arithmetic number, because the mean of its divisors is an integer number (687512644).

Almost surely, 2^1375025287 is an apocalyptic number.

1375025287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375025287 is an equidigital number, since it uses as much as digits as its factorization.

1375025287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 1375025287 is about 37081.3334037491. Note that the first 3 decimals coincide. The cubic root of 1375025287 is about 1111.9968619440.

The spelling of 1375025287 in words is "one billion, three hundred seventy-five million, twenty-five thousand, two hundred eighty-seven".