1025142504240 has 80 divisors (see below), whose sum is σ = 3280456037376. Its totient is φ = 264552902400.

The previous prime is 1025142504223. The next prime is 1025142504251. The reversal of 1025142504240 is 424052415201.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1025142504198 and 1025142504207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68886546 + ... + 68901425.

Almost surely, 2^{1025142504240} is an apocalyptic number.

1025142504240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025142504240 is an abundant number, since it is smaller than the sum of its proper divisors (2255313533136).

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

1025142504240 is a wasteful number, since it uses less digits than its factorization.

1025142504240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137788018 (or 137788012 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 1025142504240 its reverse (424052415201), we get a palindrome (1449194919441).

The spelling of 1025142504240 in words is "one trillion, twenty-five billion, one hundred forty-two million, five hundred four thousand, two hundred forty".