1025402431 has 16 divisors (see below), whose sum is σ = 1106380800. Its totient is φ = 947278368.

The previous prime is 1025402419. The next prime is 1025402473. The reversal of 1025402431 is 1342045201.

It is a cyclic number.

It is not a de Polignac number, because 1025402431 - 2⁷ = 1025402303 is a prime.

It is a super-2 number, since 2×1025402431² = 2102900291001419522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025402401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259690 + ... + 263608.

It is an arithmetic number, because the mean of its divisors is an integer number (69148800).

Almost surely, 2^1025402431 is an apocalyptic number.

1025402431 is a deficient number, since it is larger than the sum of its proper divisors (80978369).

1025402431 is a wasteful number, since it uses less digits than its factorization.

1025402431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4278.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1025402431 is about 32021.9054867133. The cubic root of 1025402431 is about 1008.3967738485.

Adding to 1025402431 its reverse (1342045201), we get a palindrome (2367447632).

The spelling of 1025402431 in words is "one billion, twenty-five million, four hundred two thousand, four hundred thirty-one".