425144623 has 2 divisors, whose sum is σ = 425144624. Its totient is φ = 425144622.

The previous prime is 425144617. The next prime is 425144639. The reversal of 425144623 is 326441524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425144623 - 2⁵ = 425144591 is a prime.

It is equal to p_22603774 and since 425144623 and 22603774 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425144693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212572311 + 212572312.

It is an arithmetic number, because the mean of its divisors is an integer number (212572312).

Almost surely, 2^425144623 is an apocalyptic number.

425144623 is a deficient number, since it is larger than the sum of its proper divisors (1).

425144623 is an equidigital number, since it uses as much as digits as its factorization.

425144623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 31.

The square root of 425144623 is about 20619.0354527073. The cubic root of 425144623 is about 751.9325703224.

The spelling of 425144623 in words is "four hundred twenty-five million, one hundred forty-four thousand, six hundred twenty-three".