1253424500400 has 120 divisors (see below), whose sum is σ = 4144657137664. Its totient is φ = 323464377600.

The previous prime is 1253424500353. The next prime is 1253424500423. The reversal of 1253424500400 is 40054243521.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16809904 + ... + 16884303.

Almost surely, 2^{1253424500400} is an apocalyptic number.

1253424500400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253424500400 is an abundant number, since it is smaller than the sum of its proper divisors (2891232637264).

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

1253424500400 is a wasteful number, since it uses less digits than its factorization.

1253424500400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33694259 (or 33694248 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 1253424500400 its reverse (40054243521), we get a palindrome (1293478743921).

The spelling of 1253424500400 in words is "one trillion, two hundred fifty-three billion, four hundred twenty-four million, five hundred thousand, four hundred".