1025270399 has 2 divisors, whose sum is σ = 1025270400. Its totient is φ = 1025270398.

The previous prime is 1025270353. The next prime is 1025270423. The reversal of 1025270399 is 9930725201.

It is a strong prime.

It is an emirp because it is prime and its reverse (9930725201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1025270399 - 2¹² = 1025266303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025270329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512635199 + 512635200.

It is an arithmetic number, because the mean of its divisors is an integer number (512635200).

Almost surely, 2^1025270399 is an apocalyptic number.

1025270399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025270399 is an equidigital number, since it uses as much as digits as its factorization.

1025270399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 1025270399 is about 32019.8438315992. The cubic root of 1025270399 is about 1008.3534912134.

The spelling of 1025270399 in words is "one billion, twenty-five million, two hundred seventy thousand, three hundred ninety-nine".