1025644332 has 24 divisors (see below), whose sum is σ = 2399846400. Its totient is φ = 340927696.

The previous prime is 1025644273. The next prime is 1025644337. The reversal of 1025644332 is 2334465201.

It is a self number, because there is not a number n which added to its sum of digits gives 1025644332.

It is not an unprimeable number, because it can be changed into a prime (1025644337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114732 + ... + 123347.

It is an arithmetic number, because the mean of its divisors is an integer number (99993600).

Almost surely, 2^1025644332 is an apocalyptic number.

1025644332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1025644332 is an abundant number, since it is smaller than the sum of its proper divisors (1374202068).

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

1025644332 is a wasteful number, since it uses less digits than its factorization.

1025644332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238445 (or 238443 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 1025644332 is about 32025.6823814888. The cubic root of 1025644332 is about 1008.4760640215.

The spelling of 1025644332 in words is "one billion, twenty-five million, six hundred forty-four thousand, three hundred thirty-two".