425079971 has 2 divisors, whose sum is σ = 425079972. Its totient is φ = 425079970.

The previous prime is 425079937. The next prime is 425080001. The reversal of 425079971 is 179970524.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425079971 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (425079371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212539985 + 212539986.

It is an arithmetic number, because the mean of its divisors is an integer number (212539986).

Almost surely, 2^425079971 is an apocalyptic number.

425079971 is the 11021-st centered heptagonal number.

425079971 is a deficient number, since it is larger than the sum of its proper divisors (1).

425079971 is an equidigital number, since it uses as much as digits as its factorization.

425079971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 425079971 is about 20617.4676185025. The cubic root of 425079971 is about 751.8944527765.

The spelling of 425079971 in words is "four hundred twenty-five million, seventy-nine thousand, nine hundred seventy-one".