425850121 has 2 divisors, whose sum is σ = 425850122. Its totient is φ = 425850120.

The previous prime is 425850107. The next prime is 425850143. The reversal of 425850121 is 121058524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425844496 + 5625 = 20636^2 + 75^2 .

It is a cyclic number.

It is not a de Polignac number, because 425850121 - 2⁷ = 425849993 is a prime.

It is a super-3 number, since 3×425850121³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 425850121.

It is not a weakly prime, because it can be changed into another prime (425850151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212925060 + 212925061.

It is an arithmetic number, because the mean of its divisors is an integer number (212925061).

Almost surely, 2^425850121 is an apocalyptic number.

It is an amenable number.

425850121 is a deficient number, since it is larger than the sum of its proper divisors (1).

425850121 is an equidigital number, since it uses as much as digits as its factorization.

425850121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 425850121 is about 20636.1362904978. The cubic root of 425850121 is about 752.3482671078.

The spelling of 425850121 in words is "four hundred twenty-five million, eight hundred fifty thousand, one hundred twenty-one".