42251531252 has 36 divisors (see below), whose sum is σ = 86381289540. Its totient is φ = 18030063744.

The previous prime is 42251531221. The next prime is 42251531279. The reversal of 42251531252 is 25213515224.

It can be written as a sum of positive squares in 2 ways, for example, as 10234154896 + 32017376356 = 101164^2 + 178934^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 416927 + ... + 508262.

It is an arithmetic number, because the mean of its divisors is an integer number (2399480265).

Almost surely, 2^42251531252 is an apocalyptic number.

It is an amenable number.

42251531252 is an abundant number, since it is smaller than the sum of its proper divisors (44129758288).

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

42251531252 is a wasteful number, since it uses less digits than its factorization.

42251531252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925440 (or 925431 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The spelling of 42251531252 in words is "forty-two billion, two hundred fifty-one million, five hundred thirty-one thousand, two hundred fifty-two".