1025312240 has 40 divisors (see below), whose sum is σ = 2392698048. Its totient is φ = 408602880.

The previous prime is 1025312237. The next prime is 1025312261. The reversal of 1025312240 is 422135201.

1025312240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1967 + ... + 45326.

Almost surely, 2^1025312240 is an apocalyptic number.

1025312240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025312240 is an abundant number, since it is smaller than the sum of its proper divisors (1367385808).

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

1025312240 is a wasteful number, since it uses less digits than its factorization.

1025312240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47577 (or 47571 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1025312240 is about 32020.4971853967. The cubic root of 1025312240 is about 1008.3672079020.

Adding to 1025312240 its reverse (422135201), we get a palindrome (1447447441).

The spelling of 1025312240 in words is "one billion, twenty-five million, three hundred twelve thousand, two hundred forty".