425515091 has 2 divisors, whose sum is σ = 425515092. Its totient is φ = 425515090.

The previous prime is 425515087. The next prime is 425515159. The reversal of 425515091 is 190515524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425515091 - 2² = 425515087 is a prime.

It is not a weakly prime, because it can be changed into another prime (425515081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212757545 + 212757546.

It is an arithmetic number, because the mean of its divisors is an integer number (212757546).

Almost surely, 2^425515091 is an apocalyptic number.

425515091 is a deficient number, since it is larger than the sum of its proper divisors (1).

425515091 is an equidigital number, since it uses as much as digits as its factorization.

425515091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 425515091 is about 20628.0171368942. The cubic root of 425515091 is about 752.1509164771.

The spelling of 425515091 in words is "four hundred twenty-five million, five hundred fifteen thousand, ninety-one".