1025121312340 has 12 divisors (see below), whose sum is σ = 2152754755956. Its totient is φ = 410048524928.

The previous prime is 1025121312337. The next prime is 1025121312367. The reversal of 1025121312340 is 432131215201.

It can be written as a sum of positive squares in 2 ways, for example, as 610279689616 + 414841622724 = 781204^2 + 644082^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25628032789 + ... + 25628032828.

It is an arithmetic number, because the mean of its divisors is an integer number (179396229663).

Almost surely, 2^{1025121312340} is an apocalyptic number.

1025121312340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025121312340 is an abundant number, since it is smaller than the sum of its proper divisors (1127633443616).

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

1025121312340 is a wasteful number, since it uses less digits than its factorization.

1025121312340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51256065626 (or 51256065624 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 1025121312340 its reverse (432131215201), we get a palindrome (1457252527541).

The spelling of 1025121312340 in words is "one trillion, twenty-five billion, one hundred twenty-one million, three hundred twelve thousand, three hundred forty".