25414454551 has 4 divisors (see below), whose sum is σ = 25427298600. Its totient is φ = 25401610504.

The previous prime is 25414454543. The next prime is 25414454633. The reversal of 25414454551 is 15545441452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25414454551 - 2³ = 25414454543 is a prime.

It is a super-2 number, since 2×25414454551² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25414454851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6419056 + ... + 6423013.

It is an arithmetic number, because the mean of its divisors is an integer number (6356824650).

Almost surely, 2^25414454551 is an apocalyptic number.

25414454551 is a deficient number, since it is larger than the sum of its proper divisors (12844049).

25414454551 is a wasteful number, since it uses less digits than its factorization.

25414454551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12844048.

The product of its digits is 320000, while the sum is 40.

The spelling of 25414454551 in words is "twenty-five billion, four hundred fourteen million, four hundred fifty-four thousand, five hundred fifty-one".