1025431513431 has 8 divisors (see below), whose sum is σ = 1472414480880. Its totient is φ = 631034777472.

The previous prime is 1025431513423. The next prime is 1025431513433. The reversal of 1025431513431 is 1343151345201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1025431513431 - 2³ = 1025431513423 is a prime.

It is a super-2 number, since 2×1025431513431² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1025431513392 and 1025431513401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025431513433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13146557826 + ... + 13146557903.

It is an arithmetic number, because the mean of its divisors is an integer number (184051810110).

Almost surely, 2^{1025431513431} is an apocalyptic number.

1025431513431 is a deficient number, since it is larger than the sum of its proper divisors (446982967449).

1025431513431 is a wasteful number, since it uses less digits than its factorization.

1025431513431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26293115745.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 1025431513431 its reverse (1343151345201), we get a palindrome (2368582858632).

The spelling of 1025431513431 in words is "one trillion, twenty-five billion, four hundred thirty-one million, five hundred thirteen thousand, four hundred thirty-one".