20250515455 has 8 divisors (see below), whose sum is σ = 24374036304. Its totient is φ = 16151467200.

The previous prime is 20250515407. The next prime is 20250515471. The reversal of 20250515455 is 55451505202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20250515455 - 2¹⁷ = 20250384383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20250515455.

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, 6116326 + ... + 6119635.

It is an arithmetic number, because the mean of its divisors is an integer number (3046754538).

Almost surely, 2^20250515455 is an apocalyptic number.

20250515455 is a deficient number, since it is larger than the sum of its proper divisors (4123520849).

20250515455 is a wasteful number, since it uses less digits than its factorization.

20250515455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12236297.

The product of its (nonzero) digits is 50000, while the sum is 34.

The spelling of 20250515455 in words is "twenty billion, two hundred fifty million, five hundred fifteen thousand, four hundred fifty-five".