420300525631 has 16 divisors (see below), whose sum is σ = 508094106624. Its totient is φ = 339873741504.

The previous prime is 420300525599. The next prime is 420300525649. The reversal of 420300525631 is 136525003024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 420300525631 - 2⁵ = 420300525599 is a prime.

It is a super-2 number, since 2×420300525631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420300525593 and 420300525602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420300525691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17868811 + ... + 17892316.

It is an arithmetic number, because the mean of its divisors is an integer number (31755881664).

Almost surely, 2^420300525631 is an apocalyptic number.

420300525631 is a deficient number, since it is larger than the sum of its proper divisors (87793580993).

420300525631 is a wasteful number, since it uses less digits than its factorization.

420300525631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35761230.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 420300525631 its reverse (136525003024), we get a palindrome (556825528655).

The spelling of 420300525631 in words is "four hundred twenty billion, three hundred million, five hundred twenty-five thousand, six hundred thirty-one".