25451015451 has 8 divisors (see below), whose sum is σ = 35720723520. Its totient is φ = 16074325512.

The previous prime is 25451015441. The next prime is 25451015477. The reversal of 25451015451 is 15451015452.

It is a happy number.

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

It is not a de Polignac number, because 25451015451 - 2¹⁰ = 25451014427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25451015441) 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, 223254465 + ... + 223254578.

It is an arithmetic number, because the mean of its divisors is an integer number (4465090440).

Almost surely, 2^25451015451 is an apocalyptic number.

25451015451 is a deficient number, since it is larger than the sum of its proper divisors (10269708069).

25451015451 is a wasteful number, since it uses less digits than its factorization.

25451015451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446509065.

The product of its (nonzero) digits is 20000, while the sum is 33.

Subtracting from 25451015451 its reverse (15451015452), we obtain a palindrome (9999999999).

It can be divided in two parts, 2545101 and 5451, that added together give a palindrome (2550552).

The spelling of 25451015451 in words is "twenty-five billion, four hundred fifty-one million, fifteen thousand, four hundred fifty-one".