1025665252 has 12 divisors (see below), whose sum is σ = 1801042236. Its totient is φ = 511081760.

The previous prime is 1025665231. The next prime is 1025665259. The reversal of 1025665252 is 2525665201.

It can be written as a sum of positive squares in 2 ways, for example, as 970073316 + 55591936 = 31146^2 + 7456^2 .

It is not an unprimeable number, because it can be changed into a prime (1025665259) 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, 436399 + ... + 438742.

It is an arithmetic number, because the mean of its divisors is an integer number (150086853).

Almost surely, 2^1025665252 is an apocalyptic number.

It is an amenable number.

1025665252 is a deficient number, since it is larger than the sum of its proper divisors (775376984).

1025665252 is a wasteful number, since it uses less digits than its factorization.

1025665252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875438 (or 875436 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1025665252 is about 32026.0089926922. The cubic root of 1025665252 is about 1008.4829205816.

The spelling of 1025665252 in words is "one billion, twenty-five million, six hundred sixty-five thousand, two hundred fifty-two".