20265274427400 has 144 divisors (see below), whose sum is σ = 69640280526960. Its totient is φ = 5278397040000.

The previous prime is 20265274427371. The next prime is 20265274427407. The reversal of 20265274427400 is 472447256202.

20265274427400 is a `hidden beast` number, since 2 + 0 + 26 + 527 + 44 + 27 + 40 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (20265274427407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 130835226 + ... + 130990025.

It is an arithmetic number, because the mean of its divisors is an integer number (483613059215).

Almost surely, 2^{20265274427400} is an apocalyptic number.

20265274427400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20265274427400 is an abundant number, since it is smaller than the sum of its proper divisors (49375006099560).

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

20265274427400 is a wasteful number, since it uses less digits than its factorization.

20265274427400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261825316 (or 261825304 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 45.

The spelling of 20265274427400 in words is "twenty trillion, two hundred sixty-five billion, two hundred seventy-four million, four hundred twenty-seven thousand, four hundred".