1252722000 has 80 divisors (see below), whose sum is σ = 4038795072. Its totient is φ = 334057600.

The previous prime is 1252721999. The next prime is 1252722001. The reversal of 1252722000 is 2272521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1252721999) and next prime (1252722001).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252722001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98394 + ... + 110393.

Almost surely, 2^1252722000 is an apocalyptic number.

1252722000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252722000 is an abundant number, since it is smaller than the sum of its proper divisors (2786073072).

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

1252722000 is a wasteful number, since it uses less digits than its factorization.

1252722000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208813 (or 208797 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 1252722000 is about 35393.8130186619. The cubic root of 1252722000 is about 1077.9986942982.

Adding to 1252722000 its reverse (2272521), we get a palindrome (1254994521).

The spelling of 1252722000 in words is "one billion, two hundred fifty-two million, seven hundred twenty-two thousand".