1020454225 has 72 divisors (see below), whose sum is σ = 1542595712. Its totient is φ = 655776000.

The previous prime is 1020454213. The next prime is 1020454231. The reversal of 1020454225 is 5224540201.

It is not a de Polignac number, because 1020454225 - 2¹¹ = 1020452177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1020454225.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6757900 + ... + 6758050.

Almost surely, 2^1020454225 is an apocalyptic number.

It is an amenable number.

1020454225 is a deficient number, since it is larger than the sum of its proper divisors (522141487).

1020454225 is a wasteful number, since it uses less digits than its factorization.

1020454225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1020454225 is about 31944.5492220504. The cubic root of 1020454225 is about 1006.7721099998.

Adding to 1020454225 its reverse (5224540201), we get a palindrome (6244994426).

The spelling of 1020454225 in words is "one billion, twenty million, four hundred fifty-four thousand, two hundred twenty-five".