1025511012 has 36 divisors (see below), whose sum is σ = 2593867276. Its totient is φ = 341625600.

The previous prime is 1025510987. The next prime is 1025511017. The reversal of 1025511012 is 2101155201.

1025511012 is a `hidden beast` number, since 10 + 2 + 551 + 101 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 529736256 + 495774756 = 23016^2 + 22266^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1025511017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56928 + ... + 72744.

Almost surely, 2^1025511012 is an apocalyptic number.

1025511012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1025511012 is an abundant number, since it is smaller than the sum of its proper divisors (1568356264).

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

1025511012 is a wasteful number, since it uses less digits than its factorization.

1025511012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17628 (or 17623 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 1025511012 is about 32023.6008593662. The cubic root of 1025511012 is about 1008.4323660096.

Adding to 1025511012 its reverse (2101155201), we get a palindrome (3126666213).

The spelling of 1025511012 in words is "one billion, twenty-five million, five hundred eleven thousand, twelve".