1252522001641 has 8 divisors (see below), whose sum is σ = 1276608953160. Its totient is φ = 1228889364976.

The previous prime is 1252522001629. The next prime is 1252522001657. The reversal of 1252522001641 is 1461002252521.

It can be written as a sum of positive squares in 4 ways, for example, as 75861134041 + 1176660867600 = 275429^2 + 1084740^2 .

It is not a de Polignac number, because 1252522001641 - 2⁷ = 1252522001513 is a prime.

It is a super-2 number, since 2×1252522001641² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252522005641) 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, 4057690 + ... + 4355443.

It is an arithmetic number, because the mean of its divisors is an integer number (159576119145).

Almost surely, 2^{1252522001641} is an apocalyptic number.

It is an amenable number.

1252522001641 is a deficient number, since it is larger than the sum of its proper divisors (24086951519).

1252522001641 is an frugal number, since it uses more digits than its factorization.

1252522001641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8413292 (or 8413186 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 1252522001641 in words is "one trillion, two hundred fifty-two billion, five hundred twenty-two million, one thousand, six hundred forty-one".