1025158660 has 24 divisors (see below), whose sum is σ = 2164734936. Its totient is φ = 407796480.

The previous prime is 1025158639. The next prime is 1025158681. The reversal of 1025158660 is 668515201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1025158639) and next prime (1025158681).

It can be written as a sum of positive squares in 4 ways, for example, as 120472576 + 904686084 = 10976^2 + 30078^2 .

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, 137977 + ... + 145216.

It is an arithmetic number, because the mean of its divisors is an integer number (90197289).

Almost surely, 2^1025158660 is an apocalyptic number.

1025158660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025158660 is an abundant number, since it is smaller than the sum of its proper divisors (1139576276).

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

1025158660 is a wasteful number, since it uses less digits than its factorization.

1025158660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283383 (or 283381 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 1025158660 is about 32018.0989441909. The cubic root of 1025158660 is about 1008.3168581118.

The spelling of 1025158660 in words is "one billion, twenty-five million, one hundred fifty-eight thousand, six hundred sixty".