1225726598100 has 36 divisors (see below), whose sum is σ = 3546435624704. Its totient is φ = 326860426080.

The previous prime is 1225726598051. The next prime is 1225726598153. The reversal of 1225726598100 is 18956275221.

It is a super-2 number, since 2×1225726598100² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1225726598100.

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, 2042877364 + ... + 2042877963.

Almost surely, 2^{1225726598100} is an apocalyptic number.

1225726598100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1225726598100 is an abundant number, since it is smaller than the sum of its proper divisors (2320709026604).

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

1225726598100 is a wasteful number, since it uses less digits than its factorization.

1225726598100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4085755344 (or 4085755337 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 1225726598100 in words is "one trillion, two hundred twenty-five billion, seven hundred twenty-six million, five hundred ninety-eight thousand, one hundred".