1025321262464 has 32 divisors (see below), whose sum is σ = 2097838488000. Its totient is φ = 498804936192.

The previous prime is 1025321262461. The next prime is 1025321262467. The reversal of 1025321262464 is 4642621235201.

It is an interprime number because it is at equal distance from previous prime (1025321262461) and next prime (1025321262467).

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025321262461) 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, 108242864 + ... + 108252335.

It is an arithmetic number, because the mean of its divisors is an integer number (65557452750).

Almost surely, 2^{1025321262464} is an apocalyptic number.

It is an amenable number.

1025321262464 is an abundant number, since it is smaller than the sum of its proper divisors (1072517225536).

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

1025321262464 is an equidigital number, since it uses as much as digits as its factorization.

1025321262464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216495250 (or 216495238 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 1025321262464 its reverse (4642621235201), we get a palindrome (5667942497665).

The spelling of 1025321262464 in words is "one trillion, twenty-five billion, three hundred twenty-one million, two hundred sixty-two thousand, four hundred sixty-four".