1025451225 has 48 divisors (see below), whose sum is σ = 1910413440. Its totient is φ = 539179200.

The previous prime is 1025451199. The next prime is 1025451239. The reversal of 1025451225 is 5221545201.

1025451225 is a `hidden beast` number, since 102 + 545 + 12 + 2 + 5 = 666.

It is not a de Polignac number, because 1025451225 - 2¹³ = 1025443033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37227 + ... + 58623.

It is an arithmetic number, because the mean of its divisors is an integer number (39800280).

Almost surely, 2^1025451225 is an apocalyptic number.

1025451225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1025451225 is a deficient number, since it is larger than the sum of its proper divisors (884962215).

1025451225 is a wasteful number, since it uses less digits than its factorization.

1025451225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21487 (or 21476 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1025451225 is about 32022.6673623544. The cubic root of 1025451225 is about 1008.4127685221.

Adding to 1025451225 its reverse (5221545201), we get a palindrome (6246996426).

The spelling of 1025451225 in words is "one billion, twenty-five million, four hundred fifty-one thousand, two hundred twenty-five".