420763615425 has 18 divisors (see below), whose sum is σ = 753634387142. Its totient is φ = 224407261440.

The previous prime is 420763615333. The next prime is 420763615463. The reversal of 420763615425 is 524516367024.

420763615425 is a `hidden beast` number, since 4 + 2 + 0 + 7 + 6 + 3 + 615 + 4 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 2863427121 + 417900188304 = 53511^2 + 646452^2 .

It is not a de Polignac number, because 420763615425 - 2¹² = 420763611329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 935030032 + ... + 935030481.

Almost surely, 2^420763615425 is an apocalyptic number.

420763615425 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

420763615425 is a deficient number, since it is larger than the sum of its proper divisors (332870771717).

420763615425 is a wasteful number, since it uses less digits than its factorization.

420763615425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870060529 (or 1870060521 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 420763615425 in words is "four hundred twenty billion, seven hundred sixty-three million, six hundred fifteen thousand, four hundred twenty-five".