425432621 has 2 divisors, whose sum is σ = 425432622. Its totient is φ = 425432620.

The previous prime is 425432593. The next prime is 425432641. The reversal of 425432621 is 126234524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295358596 + 130074025 = 17186^2 + 11405^2 .

It is a cyclic number.

It is not a de Polignac number, because 425432621 - 2¹⁰ = 425431597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425432641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212716310 + 212716311.

It is an arithmetic number, because the mean of its divisors is an integer number (212716311).

Almost surely, 2^425432621 is an apocalyptic number.

It is an amenable number.

425432621 is a deficient number, since it is larger than the sum of its proper divisors (1).

425432621 is an equidigital number, since it uses as much as digits as its factorization.

425432621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 29.

The square root of 425432621 is about 20626.0180597225. The cubic root of 425432621 is about 752.1023213389.

The spelling of 425432621 in words is "four hundred twenty-five million, four hundred thirty-two thousand, six hundred twenty-one".