1252801164 has 36 divisors (see below), whose sum is σ = 2972015592. Its totient is φ = 410739840.

The previous prime is 1252801141. The next prime is 1252801181. The reversal of 1252801164 is 4611082521.

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, 30624 + ... + 58680.

Almost surely, 2^1252801164 is an apocalyptic number.

It is an amenable number.

1252801164 is an abundant number, since it is smaller than the sum of its proper divisors (1719214428).

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

1252801164 is a wasteful number, since it uses less digits than its factorization.

1252801164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28186 (or 28123 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 1252801164 is about 35394.9313320424. The cubic root of 1252801164 is about 1078.0214013556.

Adding to 1252801164 its reverse (4611082521), we get a palindrome (5863883685).

The spelling of 1252801164 in words is "one billion, two hundred fifty-two million, eight hundred one thousand, one hundred sixty-four".