1051225505540 has 96 divisors (see below), whose sum is σ = 2604462094080. Its totient is φ = 348922699776.

The previous prime is 1051225505509. The next prime is 1051225505597. The reversal of 1051225505540 is 455055221501.

1051225505540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1051225505540² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1051225505540.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92405 + ... + 1452924.

It is an arithmetic number, because the mean of its divisors is an integer number (27129813480).

Almost surely, 2^{1051225505540} is an apocalyptic number.

1051225505540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1051225505540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1302231047040).

1051225505540 is an abundant number, since it is smaller than the sum of its proper divisors (1553236588540).

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

1051225505540 is a wasteful number, since it uses less digits than its factorization.

1051225505540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545501 (or 1545499 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 1051225505540 in words is "one trillion, fifty-one billion, two hundred twenty-five million, five hundred five thousand, five hundred forty".