905225490450 has 54 divisors (see below), whose sum is σ = 2432093377077. Its totient is φ = 241388082000.

The previous prime is 905225490329. The next prime is 905225490517. The reversal of 905225490450 is 54094522509.

905225490450 is a `hidden beast` number, since 9 + 0 + 52 + 2 + 549 + 0 + 4 + 50 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 887120980641 + 18104509809 = 941871^2 + 134553^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=672765.

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

It is a junction number, because it is equal to n+sod(n) for n = 905225490396 and 905225490405.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 20160525 + ... + 20205375.

Almost surely, 2^905225490450 is an apocalyptic number.

905225490450 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

905225490450 is an abundant number, since it is smaller than the sum of its proper divisors (1526867886627).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

905225490450 is an frugal number, since it uses more digits than its factorization.

905225490450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89720 (or 44861 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 905225490450 in words is "nine hundred five billion, two hundred twenty-five million, four hundred ninety thousand, four hundred fifty".