1025143136 has 24 divisors (see below), whose sum is σ = 2025715104. Its totient is φ = 510675840.

The previous prime is 1025143121. The next prime is 1025143169. The reversal of 1025143136 is 6313415201.

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, 50435 + ... + 67778.

It is an arithmetic number, because the mean of its divisors is an integer number (84404796).

Almost surely, 2^1025143136 is an apocalyptic number.

1025143136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1025143136 is a deficient number, since it is larger than the sum of its proper divisors (1000571968).

1025143136 is a wasteful number, since it uses less digits than its factorization.

1025143136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118494 (or 118486 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1025143136 is about 32017.8565178870. The cubic root of 1025143136 is about 1008.3117684313.

Adding to 1025143136 its reverse (6313415201), we get a palindrome (7338558337).

The spelling of 1025143136 in words is "one billion, twenty-five million, one hundred forty-three thousand, one hundred thirty-six".