1025663451 has 8 divisors (see below), whose sum is σ = 1367721984. Its totient is φ = 683690280.

The previous prime is 1025663417. The next prime is 1025663461. The reversal of 1025663451 is 1543665201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1025663451 - 2¹³ = 1025655259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1025663461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16066 + ... + 48056.

It is an arithmetic number, because the mean of its divisors is an integer number (170965248).

Almost surely, 2^1025663451 is an apocalyptic number.

1025663451 is a deficient number, since it is larger than the sum of its proper divisors (342058533).

1025663451 is a wasteful number, since it uses less digits than its factorization.

1025663451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42681.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1025663451 is about 32025.9808749084. The cubic root of 1025663451 is about 1008.4823303049.

The spelling of 1025663451 in words is "one billion, twenty-five million, six hundred sixty-three thousand, four hundred fifty-one".