1253400222 has 16 divisors (see below), whose sum is σ = 2544216192. Its totient is φ = 411564120.

The previous prime is 1253400199. The next prime is 1253400223. The reversal of 1253400222 is 2220043521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253400223) 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, 1558554 + ... + 1559357.

It is an arithmetic number, because the mean of its divisors is an integer number (159013512).

Almost surely, 2^1253400222 is an apocalyptic number.

1253400222 is an abundant number, since it is smaller than the sum of its proper divisors (1290815970).

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

1253400222 is a wasteful number, since it uses less digits than its factorization.

1253400222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117983.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1253400222 is about 35403.3928035153. The cubic root of 1253400222 is about 1078.1932015465.

Adding to 1253400222 its reverse (2220043521), we get a palindrome (3473443743).

The spelling of 1253400222 in words is "one billion, two hundred fifty-three million, four hundred thousand, two hundred twenty-two".