1225247555400 has 96 divisors (see below), whose sum is σ = 4143564482400. Its totient is φ = 297029708800.

The previous prime is 1225247555333. The next prime is 1225247555401. The reversal of 1225247555400 is 45557425221.

It is not an unprimeable number, because it can be changed into a prime (1225247555401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92815185 + ... + 92828384.

It is an arithmetic number, because the mean of its divisors is an integer number (43162130025).

Almost surely, 2^{1225247555400} is an apocalyptic number.

1225247555400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225247555400 is an abundant number, since it is smaller than the sum of its proper divisors (2918316927000).

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

1225247555400 is a wasteful number, since it uses less digits than its factorization.

1225247555400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185643599 (or 185643590 counting only the distinct ones).

The product of its (nonzero) digits is 560000, while the sum is 42.

The spelling of 1225247555400 in words is "one trillion, two hundred twenty-five billion, two hundred forty-seven million, five hundred fifty-five thousand, four hundred".