1025113120531 has 4 divisors (see below), whose sum is σ = 1025168392312. Its totient is φ = 1025057848752.

The previous prime is 1025113120519. The next prime is 1025113120547. The reversal of 1025113120531 is 1350213115201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1025113120531 - 2¹⁵ = 1025113087763 is a prime.

It is a super-2 number, since 2×1025113120531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1025113120496 and 1025113120505.

It is not an unprimeable number, because it can be changed into a prime (1025113120501) 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, 27608061 + ... + 27645166.

It is an arithmetic number, because the mean of its divisors is an integer number (256292098078).

Almost surely, 2^{1025113120531} is an apocalyptic number.

1025113120531 is a deficient number, since it is larger than the sum of its proper divisors (55271781).

1025113120531 is an equidigital number, since it uses as much as digits as its factorization.

1025113120531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55271780.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 1025113120531 its reverse (1350213115201), we get a palindrome (2375326235732).

The spelling of 1025113120531 in words is "one trillion, twenty-five billion, one hundred thirteen million, one hundred twenty thousand, five hundred thirty-one".