425021951 has 2 divisors, whose sum is σ = 425021952. Its totient is φ = 425021950.

The previous prime is 425021929. The next prime is 425021957. The reversal of 425021951 is 159120524.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425021951 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425021957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212510975 + 212510976.

It is an arithmetic number, because the mean of its divisors is an integer number (212510976).

Almost surely, 2^425021951 is an apocalyptic number.

425021951 is a deficient number, since it is larger than the sum of its proper divisors (1).

425021951 is an equidigital number, since it uses as much as digits as its factorization.

425021951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 425021951 is about 20616.0605111646. The cubic root of 425021951 is about 751.8602420365.

The spelling of 425021951 in words is "four hundred twenty-five million, twenty-one thousand, nine hundred fifty-one".