1025225440 has 48 divisors (see below), whose sum is σ = 2427138000. Its totient is φ = 409236480.

The previous prime is 1025225431. The next prime is 1025225441. The reversal of 1025225440 is 445225201.

It is a super-3 number, since 3×1025225440³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025225441) 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, 73420 + ... + 86260.

It is an arithmetic number, because the mean of its divisors is an integer number (50565375).

Almost surely, 2^1025225440 is an apocalyptic number.

1025225440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025225440 is an abundant number, since it is smaller than the sum of its proper divisors (1401912560).

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

1025225440 is a wasteful number, since it uses less digits than its factorization.

1025225440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13355 (or 13347 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1025225440 is about 32019.1417748821. The cubic root of 1025225440 is about 1008.3387519383.

The spelling of 1025225440 in words is "one billion, twenty-five million, two hundred twenty-five thousand, four hundred forty".