1025311401540 has 72 divisors (see below), whose sum is σ = 3210437438208. Its totient is φ = 264596489280.

The previous prime is 1025311401533. The next prime is 1025311401619. The reversal of 1025311401540 is 451041135201.

1025311401540 is a `hidden beast` number, since 1 + 0 + 2 + 5 + 3 + 114 + 0 + 1 + 540 = 666.

1025311401540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1025311401540² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91868202 + ... + 91879361.

It is an arithmetic number, because the mean of its divisors is an integer number (44589408864).

Almost surely, 2^{1025311401540} is an apocalyptic number.

1025311401540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025311401540 is an abundant number, since it is smaller than the sum of its proper divisors (2185126036668).

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

1025311401540 is a wasteful number, since it uses less digits than its factorization.

1025311401540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183747609 (or 183747604 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 1025311401540 its reverse (451041135201), we get a palindrome (1476352536741).

The spelling of 1025311401540 in words is "one trillion, twenty-five billion, three hundred eleven million, four hundred one thousand, five hundred forty".