31225258887040 has 64 divisors (see below), whose sum is σ = 74649471462720. Its totient is φ = 12489838028800.

The previous prime is 31225258887029. The next prime is 31225258887047. The reversal of 31225258887040 is 4078885252213.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31225258887047) 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, 31116330 + ... + 32104150.

It is an arithmetic number, because the mean of its divisors is an integer number (1166397991605).

Almost surely, 2^{31225258887040} is an apocalyptic number.

It is an amenable number.

31225258887040 is an abundant number, since it is smaller than the sum of its proper divisors (43424212575680).

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

31225258887040 is an equidigital number, since it uses as much as digits as its factorization.

31225258887040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037231 (or 1037219 counting only the distinct ones).

The product of its (nonzero) digits is 8601600, while the sum is 55.

The spelling of 31225258887040 in words is "thirty-one trillion, two hundred twenty-five billion, two hundred fifty-eight million, eight hundred eighty-seven thousand, forty".