2025378857 has 2 divisors, whose sum is σ = 2025378858. Its totient is φ = 2025378856.

The previous prime is 2025378847. The next prime is 2025378877. The reversal of 2025378857 is 7588735202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1690525456 + 334853401 = 41116^2 + 18299^2 .

It is a cyclic number.

It is not a de Polignac number, because 2025378857 - 2⁴ = 2025378841 is a prime.

It is not a weakly prime, because it can be changed into another prime (2025378847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1012689428 + 1012689429.

It is an arithmetic number, because the mean of its divisors is an integer number (1012689429).

Almost surely, 2^2025378857 is an apocalyptic number.

It is an amenable number.

2025378857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2025378857 is an equidigital number, since it uses as much as digits as its factorization.

2025378857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 940800, while the sum is 47.

The square root of 2025378857 is about 45004.2093253509. The cubic root of 2025378857 is about 1265.2278918894.

The spelling of 2025378857 in words is "two billion, twenty-five million, three hundred seventy-eight thousand, eight hundred fifty-seven".