25125450122551 has 4 divisors (see below), whose sum is σ = 25125480916192. Its totient is φ = 25125419328912.

The previous prime is 25125450122429. The next prime is 25125450122593. The reversal of 25125450122551 is 15522105452152.

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 25125450122551 - 2¹¹ = 25125450120503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25125450122251) 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, 14138655 + ... + 15816208.

It is an arithmetic number, because the mean of its divisors is an integer number (6281370229048).

Almost surely, 2^{25125450122551} is an apocalyptic number.

25125450122551 is a deficient number, since it is larger than the sum of its proper divisors (30793641).

25125450122551 is an equidigital number, since it uses as much as digits as its factorization.

25125450122551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30793640.

The product of its (nonzero) digits is 200000, while the sum is 40.

The spelling of 25125450122551 in words is "twenty-five trillion, one hundred twenty-five billion, four hundred fifty million, one hundred twenty-two thousand, five hundred fifty-one".