1025330400451 has 4 divisors (see below), whose sum is σ = 1171806171952. Its totient is φ = 878854628952.

The previous prime is 1025330400431. The next prime is 1025330400463. The reversal of 1025330400451 is 1540040335201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1025330400451 - 2⁹ = 1025330399939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025330400401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73237885740 + ... + 73237885753.

It is an arithmetic number, because the mean of its divisors is an integer number (292951542988).

Almost surely, 2^{1025330400451} is an apocalyptic number.

1025330400451 is a deficient number, since it is larger than the sum of its proper divisors (146475771501).

1025330400451 is an equidigital number, since it uses as much as digits as its factorization.

1025330400451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146475771500.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 1025330400451 its reverse (1540040335201), we get a palindrome (2565370735652).

The spelling of 1025330400451 in words is "one trillion, twenty-five billion, three hundred thirty million, four hundred thousand, four hundred fifty-one".