1025105235 has 128 divisors (see below), whose sum is σ = 2128896000. Its totient is φ = 417432960.

The previous prime is 1025105231. The next prime is 1025105267. The reversal of 1025105235 is 5325015201.

It is a happy number.

It is not a de Polignac number, because 1025105235 - 2² = 1025105231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1025105231) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3338952 + ... + 3339258.

It is an arithmetic number, because the mean of its divisors is an integer number (16632000).

Almost surely, 2^1025105235 is an apocalyptic number.

1025105235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1025105235 is an abundant number, since it is smaller than the sum of its proper divisors (1103790765).

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

1025105235 is a wasteful number, since it uses less digits than its factorization.

1025105235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 1025105235 is about 32017.2646395659. The cubic root of 1025105235 is about 1008.2993420381.

The spelling of 1025105235 in words is "one billion, twenty-five million, one hundred five thousand, two hundred thirty-five".