20125464671455 has 32 divisors (see below), whose sum is σ = 29351051472960. Its totient is φ = 13044911738880.

The previous prime is 20125464671453. The next prime is 20125464671497. The reversal of 20125464671455 is 55417646452102.

It is not a de Polignac number, because 20125464671455 - 2¹ = 20125464671453 is a prime.

It is a super-2 number, since 2×20125464671455² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125464671453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 485281042 + ... + 485322511.

It is an arithmetic number, because the mean of its divisors is an integer number (917220358530).

Almost surely, 2^{20125464671455} is an apocalyptic number.

20125464671455 is a deficient number, since it is larger than the sum of its proper divisors (9225586801505).

20125464671455 is a wasteful number, since it uses less digits than its factorization.

20125464671455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970603611.

The product of its (nonzero) digits is 8064000, while the sum is 52.

The spelling of 20125464671455 in words is "twenty trillion, one hundred twenty-five billion, four hundred sixty-four million, six hundred seventy-one thousand, four hundred fifty-five".