31425254420252 has 96 divisors (see below), whose sum is σ = 69861792881664. Its totient is φ = 12011917132800.

The previous prime is 31425254420251. The next prime is 31425254420281. The reversal of 31425254420252 is 25202445252413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425254420251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 364684052 + ... + 364770212.

It is an arithmetic number, because the mean of its divisors is an integer number (727727009184).

Almost surely, 2^{31425254420252} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31425254420252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34930896440832).

31425254420252 is an abundant number, since it is smaller than the sum of its proper divisors (38436538461412).

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

31425254420252 is a wasteful number, since it uses less digits than its factorization.

31425254420252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108579 (or 108577 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 41.

Adding to 31425254420252 its reverse (25202445252413), we get a palindrome (56627699672665).

The spelling of 31425254420252 in words is "thirty-one trillion, four hundred twenty-five billion, two hundred fifty-four million, four hundred twenty thousand, two hundred fifty-two".