1351225201556 has 24 divisors (see below), whose sum is σ = 2372522799360. Its totient is φ = 673362299232.

The previous prime is 1351225201523. The next prime is 1351225201709. The reversal of 1351225201556 is 6551025221531.

It is a super-2 number, since 2×1351225201556² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7312601 + ... + 7495103.

It is an arithmetic number, because the mean of its divisors is an integer number (98855116640).

Almost surely, 2^{1351225201556} is an apocalyptic number.

It is an amenable number.

1351225201556 is a deficient number, since it is larger than the sum of its proper divisors (1021297597804).

1351225201556 is a wasteful number, since it uses less digits than its factorization.

1351225201556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188663 (or 188661 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 1351225201556 in words is "one trillion, three hundred fifty-one billion, two hundred twenty-five million, two hundred one thousand, five hundred fifty-six".