1025425642440 has 128 divisors (see below), whose sum is σ = 3092255424000. Its totient is φ = 272030220288.

The previous prime is 1025425642427. The next prime is 1025425642447. The reversal of 1025425642440 is 442465245201.

It is not an unprimeable number, because it can be changed into a prime (1025425642447) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 17983896 + ... + 18040824.

It is an arithmetic number, because the mean of its divisors is an integer number (24158245500).

Almost surely, 2^{1025425642440} is an apocalyptic number.

1025425642440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025425642440 is an abundant number, since it is smaller than the sum of its proper divisors (2066829781560).

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

1025425642440 is a wasteful number, since it uses less digits than its factorization.

1025425642440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57719 (or 57715 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 39.

The spelling of 1025425642440 in words is "one trillion, twenty-five billion, four hundred twenty-five million, six hundred forty-two thousand, four hundred forty".