420451025 has 12 divisors (see below), whose sum is σ = 527643312. Its totient is φ = 332306640.

The previous prime is 420451007. The next prime is 420451037. The reversal of 420451025 is 520154024.

It is a happy number.

It is not a de Polignac number, because 420451025 - 2²⁰ = 419402449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99239 + ... + 103388.

It is an arithmetic number, because the mean of its divisors is an integer number (43970276).

Almost surely, 2^420451025 is an apocalyptic number.

It is an amenable number.

420451025 is a deficient number, since it is larger than the sum of its proper divisors (107192287).

420451025 is a wasteful number, since it uses less digits than its factorization.

420451025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202720 (or 202715 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 420451025 is about 20504.9024625820. The cubic root of 420451025 is about 749.1552117640.

The spelling of 420451025 in words is "four hundred twenty million, four hundred fifty-one thousand, twenty-five".