1025121560 has 32 divisors (see below), whose sum is σ = 2307614400. Its totient is φ = 409854720.

The previous prime is 1025121557. The next prime is 1025121583. The reversal of 1025121560 is 651215201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104465 + ... + 113855.

It is an arithmetic number, because the mean of its divisors is an integer number (72112950).

Almost surely, 2^1025121560 is an apocalyptic number.

1025121560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025121560 is an abundant number, since it is smaller than the sum of its proper divisors (1282492840).

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

1025121560 is a wasteful number, since it uses less digits than its factorization.

1025121560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12131 (or 12127 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1025121560 is about 32017.5195791304. The cubic root of 1025121560 is about 1008.3046944639.

Adding to 1025121560 its reverse (651215201), we get a palindrome (1676336761).

The spelling of 1025121560 in words is "one billion, twenty-five million, one hundred twenty-one thousand, five hundred sixty".