20425615454 has 16 divisors (see below), whose sum is σ = 30772704816. Its totient is φ = 10168080000.

The previous prime is 20425615453. The next prime is 20425615493. The reversal of 20425615454 is 45451652402.

It is a super-2 number, since 2×20425615454² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425615453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1560224 + ... + 1573260.

It is an arithmetic number, because the mean of its divisors is an integer number (1923294051).

Almost surely, 2^20425615454 is an apocalyptic number.

20425615454 is a deficient number, since it is larger than the sum of its proper divisors (10347089362).

20425615454 is a wasteful number, since it uses less digits than its factorization.

20425615454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16411.

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 20425615454 in words is "twenty billion, four hundred twenty-five million, six hundred fifteen thousand, four hundred fifty-four".