1025120136 has 16 divisors (see below), whose sum is σ = 2562800400. Its totient is φ = 341706704.

The previous prime is 1025120087. The next prime is 1025120137. The reversal of 1025120136 is 6310215201.

It is not an unprimeable number, because it can be changed into a prime (1025120137) 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, 21356646 + ... + 21356693.

It is an arithmetic number, because the mean of its divisors is an integer number (160175025).

Almost surely, 2^1025120136 is an apocalyptic number.

It is an amenable number.

1025120136 is an abundant number, since it is smaller than the sum of its proper divisors (1537680264).

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

1025120136 is a wasteful number, since it uses less digits than its factorization.

1025120136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42713348 (or 42713344 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1025120136 is about 32017.4973412976. The cubic root of 1025120136 is about 1008.3042275838.

Adding to 1025120136 its reverse (6310215201), we get a palindrome (7335335337).

The spelling of 1025120136 in words is "one billion, twenty-five million, one hundred twenty thousand, one hundred thirty-six".