1025575620 has 48 divisors (see below), whose sum is σ = 2949229248. Its totient is φ = 266094720.

The previous prime is 1025575619. The next prime is 1025575627. The reversal of 1025575620 is 265755201.

It is not an unprimeable number, because it can be changed into a prime (1025575627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228766 + ... + 233205.

It is an arithmetic number, because the mean of its divisors is an integer number (61442276).

Almost surely, 2^1025575620 is an apocalyptic number.

1025575620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025575620 is an abundant number, since it is smaller than the sum of its proper divisors (1923653628).

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

1025575620 is a wasteful number, since it uses less digits than its factorization.

1025575620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462020 (or 462018 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 1025575620 is about 32024.6095994939. The cubic root of 1025575620 is about 1008.4535429088.

The spelling of 1025575620 in words is "one billion, twenty-five million, five hundred seventy-five thousand, six hundred twenty".