250648987 has 2 divisors, whose sum is σ = 250648988. Its totient is φ = 250648986.

The previous prime is 250648967. The next prime is 250648991. The reversal of 250648987 is 789846052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 250648987 - 2²³ = 242260379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 250648987.

It is not a weakly prime, because it can be changed into another prime (250648967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125324493 + 125324494.

It is an arithmetic number, because the mean of its divisors is an integer number (125324494).

Almost surely, 2^250648987 is an apocalyptic number.

250648987 is a deficient number, since it is larger than the sum of its proper divisors (1).

250648987 is an equidigital number, since it uses as much as digits as its factorization.

250648987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 250648987 is about 15831.8977700085. The cubic root of 250648987 is about 630.5051688515.

The spelling of 250648987 in words is "two hundred fifty million, six hundred forty-eight thousand, nine hundred eighty-seven".